You should talk to her and tell her you were using protection (which i hope you were) and make her feel better because im sure her mind is going crazy with ideas lol
It'll be awkward for a while, but if the subjects comes up, just apoligize, and avoid talking about it at all costs. Maybe if you two are watching t.v. and you feel an awkward moment, mutter "I'm sorry" and then go do something else. O_O
I had a situation like that happen to me. I didn't say anything and my mom stayed indenial about it for quite a long time. I'm not sure what your mom will do. You could bring it up or wait for her to bring it up. In the mean-time it might be best for you not to have sex in your home for a while. Goodluck!
Prepare for the long conversation with your mom about sex. She is equally stumped right now about what to say, but she has to do something. Be honest with her and be nice and polite about listening.
You were lucky she made her presence known and left you alone. It was probably in that moment that it stopped anyway.
I can't even start counting how many stupid things you have just done.
You should have thought about it before you did it...what's wrong with kids these days...
Anyways, talk to her and explain everything. Make sure to apologize.
When you see her next, just kinda act like nothing happened until she says something... then just be honest!
That is the best thing you can do is be honest when it comes to parents and sex (ONLY WHEN THEY ASK)