Has anyone got pregnant after having sex at 7w pp?

Title basically says it all. I’m 7w pp and my bf and I just had sex again for the first time. I thought he had a condom on but apparently not when he came in me I realized it and started crying uncontrollably. I don’t want to get pregnant again yet. I love my son more than anything but I hated being pregnant. My bf was under the impression I wouldnt get pregnant again as it took us a year when we were trying for our son so I had to talk to him about how fertile you are after having a baby 🙃 right now I’m just trying to accept the fact I could possibly be pregnant from this. Did anyone else have another baby right away and was it awful? I am so scared it’s been really hard on me getting used to caring for a baby 24/7