I feel like a terrible person.....

I had my anatomy scan at 18 weeks. My baby is completely healthy, but the ultrasound tech said my placenta was lower than it needed to be so the tech scheduled a ultrasound for my next check up at 22 weeks for a vaginal ultrasound to check to see if it’s moved up... All she said was no sex. Well it’s been been 3 weeks with no sex and last night I gave in..... I feel awful. My husband didn’t fully go in all the way. He just put the tip in. But I ended up having an orgasm since I haven’t in so long... I haven’t bleed or anything but when I woke up this morning my hips and pelvis is hurting! I was 21 weeks yesterday.

I also went walking yesterday and my lower pelvis was hurting during walking so maybe I’m just sore from yesterday ? It doesn’t hurt unless I’m walking and it’s not an awful pain it’s just mainly uncomfortable. I know it was selfish for me to have sex when the tech told me no sex. I feel so bad about it and I’m so worried I messed something up. :(