My mom caught us..

So yesterday my boyfriend was over my house and we’ve been having sex for a few months now. I’m allowed to have him in my room with the door cracked and we usually hear when someone walks up. I was on top of him with my shirt off and he just had his pants pulled down when my mom walked in. She came upstairs to bring us milkshakes and we obviously didn’t hear her. She walked in and I jumped off of him and she just continued to bring us milkshakes and then left my room. She hasn’t said anything since and I don’t know what to think of it. The only thing I could say is that we are being safe because I’m on the pill and we use a condom. But I’m on the pill because of medical reasons, so we never really had a “talk”. Have any opinions?