Tell her about the implant

You think, and realize that the best option is probably to just come clean and be honest; hopefully she'll understand and want to help.

Unsure of what to do while you wait, you stand awkwardly facing the door, naked from the waist down. Even this level of exposure in the privacy of your own room is enough to set your idle thoughts off and the excitement finds its way to your pussy. Luckily, you don't have to wait long, and you hear Erica in the hallway. She opens the door. "Woah! Not exactly the welcome I was expecting!"

"H-hey..." you stammer awkwardly, a blush coming to your cheeks. "How was your night?"

"Never mind that!" she exclaims. "What's all this then? Did my shy little roommate have a sudden awakening?"

Taking a deep breath, you explain everything that happened as Erica puts her things away. You tell her about the implant, about the procedure, and about your mishap last night that left you unable to wear clothes. "I still have like twelve hours left on the timer and I have an exam soon. Can we please try setting up your phone as the owner account and turning off the timer?"