You slipped into her

You pressed your cock down with some effort, pointing at her sex. You parted your legs further urging her hips closer to you and stopped her as her lips were reaching your glans. You rubbed the tip of your cock back and forth over her clit and between her folds. She moaned loud and rocked her hips against you. When she started to tense up, you stopped and pressed your cock further down. You pushed her on her lower back, making her move her hips towards you. As she slid forward you felt her lips slip easily over the length of your shaft enticing a longing moan from her. You pulled her against you and whispered, "Rock your hips again."
She nodded breathing heavily and as her lips slipped back and forth over your cock you moaned. Within moments you were both moaning in delight.

"Rock your hips further," you whispered as you slipped your slick hand between you and your fingertip found her nub with ease. You began to rub her as her lips slipped further over your cock. She moaned and quivered, holding tightly on to your shoulders.
"Further," you urged as her breathing became rapid.
She barely nodded and bit her lip from the effort as she moved her hips back even further before rocking forward again. You groaned in delight as you felt the tip of your glans slide over her entrance.
You nodded and caressed her lower back, "Yes, that's my girl."
You could feel her pussy clenching from your words and grinned, "Oh, you like that, don't you."
"Yes," she moaned, "I do."
You grinned wider and increased the pace of your finger on her clit. Circling and rubbing it with the pace of her rocking. "My girl wants to have fun, right?" pausing your finger as you asked her.
She nodded eagerly, moaning, "Oh! Yes, I want to have fun. Lots of it."
Your cock twitched happily against her and you rotated your hips a little while she slid back and forth. The tip of your cock dipping slightly into her entrance with each move, making you moan in delight. You slipped your hand over her ass and underneath her. When she rocked forward you pressed your glans further into her. She moaned loud in response, then slid back until your tip slipped out of her and your cock sprang up.
She gazed at you, flushed, panting and pleading. "Please, don't, we're not protected," she managed to utter through her haze.
"Okay, don't worry," you said and pressed your cock down again and with your other hand against her buttocks to move her back over your cock.

She hesitantly slid forward again and you released your cock against her, then searched her nub. You rubbed her as she rocked her hips again, sliding her folds over the length your shaft.
"Further," you urged as you increased the pressure of your finger.
She hesitated briefly, then moaned longingly as you slowed down. She rocked her hips with rotating movements, slipping further over your length, but not quite reaching your glans.
You groaned, "Further, my girl."
Her pussy clenched again from your words and she moved her hips more. The tip of your cock almost reached your rubbing finger and you moaned longingly as she moved her hips forward again hitting the crack of her ass against your tip. Your other hand caressed her buttock encouraging.
"Yes, that's my good girl," you moaned as you increased the pace of your rubbing finger.
She moaned loud and gripped your shoulders tightly while her hips moved faster over your cock. You felt her shudder briefly.
"No, don't come, my girl," you said as firmly as you could muster.
She moaned longingly rocking her hips even more against your finger, making the tip of your cock slide further along the crack between her buttocks. Your finger circled over her clit, slowing down when you felt her pussy clench and her body shudder. Your cock began to pulse, then you pressed hard on her clit, making her move backwards a little more.
Between pants and moans you ordered, "Come, my girl, now."

You rubbed her clit at a high pace. She began to shudder and you jerked your hips forward as you felt her entrance slide over your tip. She moaned and gripped your glans as it slipped inside. Her shudders increased and the rocking of her hips alternated with jerks.
She moaned loud, "Oh yes, I'm coming for you."
Her pussy began to spasm while you thrust your hips up and plunged your pulsing member deeper inside her. She shuddered even more gripping your shoulders tightly and her hips started to move up and down on your shaft. With each downward move of her hips you thrust into her, making your cock throb and pulse. Her body began to twitch and shock, her pussy clenched hard on you while she bounced on your cock. It was too much for you and you moaned loud as you thrust up hard and jetted your cum deep inside her. You thrust a few more times into her, jetting more cum deep inside her, while her body continued to shudder and shake.
You stopped thrusting as you felt you had emptied yourself into her completely. Her shudders subsided as you grew limp inside. As you straightened, you felt your cock slipping out of her from the pressure of her pussy. She fell limp against you, gasping for air and occasionally shuddering. You moved a little underneath her and hugged her against you.

"Well done, my girl," you whispered hoarsely, causing her to spasm, then moan again.
You caressed her back and grinned when you felt a drop of cum leaking on your thigh. You kissed the top of her head as her breathing returned back to normal.
Her shoulders shook as she began to sob. "You came inside me, I could get pregnant" she sobbed indignantly.
You gave a slight shrug, "You came hard, right?"
She nodded, "Yes, but..."
"And it felt great, right?" you asked.
She nodded again, "Yes, but..."
"And women usually have to make a lot of effort to get pregnant, right?" you insisted.
She sighed, "Well, not all women."
"When was your last period?" you asked.
She was silent as she thought for a moment, "Ehm, about two and a half, or three weeks ago."
You lifted her head and kissed her tenderly before looking into her eyes and whispering, "You'll be fine, my girl."
"I hope so," she said uncertain.

You moved your hands to her hips and urged her to stand up. "On your feet," you said and smiled at her as she rose. As she stepped back unsteadily you spotted a trickle of cum leaking along the top of her inner thigh. You rubbed the red marks on your thighs, then stood up.
"The bathroom is down the hall," you said as you noticed her looking around.
She walked away and you headed into the kitchen and cleaned yourself up at the sink. You were already nearly dressed as she returned.
"How do you feel, my girl?" you asked.
She looked confused. "Ehm..." she began.
You stepped closer to her and caressed her upper arms, "Like you had two amazing climaxes?"
She nodded, "Yes, but..."
"No buts, my girl," and you kissed her forehead, "now get dressed."

You buttoned up your shirt and smiled at the sight of the reversed stripping. When she was finished you lead her towards the hall, grabbing her coat and bag, then handing them to her. She blinked and put on her coat while you disappeared into the study and returned with your coat on. You lead her to your car and drove her home, humming happily. She was silent all the way.
"See you at my lecture," you said as she got out of the car.
She bent and looked still somewhat confused at you. She barely nodded, "I guess so." then closed the door. You drove away before she reached her front door, grinning like a Cheshire cat.