My mom walked in on my boyfriend and I having sex

My and my boyfriend had recently had a fight. We sort of made up and he spent the night at my house. When we woke up we spent all morning talking about the fight and then we made up... Then we decided to have sex. We figured it's 8 in the morning my family should be asleep! Half way through it, my mom walked in because I had a phone call. She immediately walked out then texted me and Said we needed to talk. I was freaking out, I went to talk to her and she said she knew we were having sex but that it became very real for her that I'm not her little girl anymore (I'm 17) she said she couldn't look at me the same... And I'm so embarrassed idk what to do or what to think or how to act... I need help!!

I guess i have to wonder what do you think you can do? whats done is done you cant convince someone to feel another way they have to choose to feel differently.