Last month, mid July, I had unprotected sex with my boyfriend. I am on birth control, but really paranoid, so I took Plan B the day after as well. I got my period as expected, and it was a regular period. So that period started July 29. About a week after my period ended, I got another period (still taking my birth control on time every day), very light, for about 4 days. I had only protected sex (condoms overtime - they didn't rip or slip off) after that. Now, I am 13 days late from my regular period/ 1 day late from that breakthrough. I took a pregnancy test 1 week ago, when I was late from my regular period and it was negative (so I am not pregnant from the first time).
I bought another early-detect HPT, but I do not want to waste it. Would I be safe taking it now?
Please let me know if anyone else has experienced this before.