Caught

Okay, so one night I slept on my sofa and it was getting late and I kinda started to masturbate to get me to sleep. Well I didn’t have my blanket over me and I fall asleep with my hand down there. I wake up to someone in the kitchen, and you have to walk through the living room to get to the kitchen. My hand was still down there! So whoever was in there, saw that! So I take my hand out and pretend to be asleep, and my mom walks out and sits on the other sofa. When I woke up she was being super nice and polite to me. What the hell do I do!?