Sex 3 weeks postpartum 🤦🏽‍♀️

I’m a huge idiot. I always preach about how dangerous it is to have sex before six weeks. Well I’m a freaking hypocrite because I just did the opposite of what I preach. I’m barely 3 weeks pp. I had a great labour, no stitches, not even a scratch. Bleeding stopped of course a few days ago. Well my boyfriend just convinced me into having sex. I didn’t want to but in the heat of the moment it happened of course since it’s been so long I just caved. Now I’m freaking tf out. What if I get an infection and die? Who will take care of my babies??? I’m so scared I’m honestly so scared I’m shaking. I’m so stupid I can’t even believe I could do this. Please tell me it’ll be okay. What should I do?? Is there anyway to make sure I don’t get an infection? Is there any signs I should look out for?? I’m freaking out guys. I’m so sorry I know it’s my fault and I don’t deserve any kind words but I just need someone to tell me I’ll be okay or what to keep my eye on. I hate myself for this