Am I pregnant ? Please help!

Alright ladies, I’m very nervous about this. I had protected sex with a fling in June and the condom broke and he came inside me. I do have the iud. My ex came inside me all the time and we never had any problems. This gentleman tho, is bigger and has complained about feeling my birth control. I was however tho at the end of my period. I did take a plan B the next morning to take extra precautions. I can not have a baby. It’s not an option and yes I know if that were the case I shouldn’t have sex at all. My problem is, after then, obviously I’ve been stressing. I haven’t had a real period since the end of May. I had some heavy spotting for 5 days in June. I also have taken 8 pregnancy tests because I’m paranoid periodically between the end of June and now. I did have light spotting in July as well. But nothing compared to June. I took one of those pregnancy tests a couple days ago and it still was negative. Should I be worried I’m pregnant or should I be okay?

Please help!