Try to tell her (alternate)

“Uh, Ma’am I think you...” You start trying to explain but she seems unwilling to accept your help and cuts you off before you can tell her.

You look at yourself. Everything seems in order. Shirt ripped wide open, without a bra, because you were feeling daring today. I-cup titties hanging out, with the quarter sized nipples hard at attention in the air. Luscious thighs, surrounded by shredded jeans, almost not even there. Your superior posterior clad in overstretched boxer briefs, and your rather large cunt, sticking out a full inch from between her thighs, the dripping camel toe obvious in the too small boxers. Your long purple hair still reaches your waist, wavy as can be.

"Ma'am, I uh-" You try explaining that you you can't see any difference, but she cuts you off abruptly, seeming rather frustrated.

“Quiet Mister Doe or I’ll make a change you won’t be able to fake obliviousness about.... actually that may not be a bad call.” She gets an evil grin as she fiddles with the app more leaving you to ponder why she called you Mister.

You continue to stand there, confused, but you do acknowledge that your breasts are getting achingly tight, and it makes sense since you haven't milked yourself in a few days. You sigh, and since it can't be helped, start kneading your breasts. Then it hits you, you can ask the professor for help!

Although she seems kind of frustrated at this point, you still ask the question. "Excuse me professor, it's kind of embarrassing, but can you help me out here? I haven't milked myself in a few days, and it's a lot easier with help."