Mom caught me having sex with boyfriend

So the title basically tells it all. Let me give you a little background, my mom and I live with my grandparents but she basically lives with her boyfriend and my grandparents went out of the country for a month. And my boyfriend and I of over a year of course took advantage (we're 19) and we were having sex. Surprisingly my mom came home without us hearing and literally opened the door to us laying down naked (we were taking a break before our next move omg 😂) so yeah she started to try and beat him up. Idk I just don't want to feel alone anyone else have stories of getting caught in the act?? Please help me feel less traumatized 😭😭