I had unprotected sex on June 21, and took 2 plan B pills an hour later. I got my period in July for 2-3 days, but haven't gotten my period in August until now (September). I know that the pills must have messed up my cycle, but is it possible that I could be pregnant? I took a pregnancy test and it came back negative.
You are more likely to be pregnant but need to consider hormone testing: FSH, T-SH, DHEAS, free testerone, and Prolactin.
It is unlikely that you are pregnant
It is taking time to to get back to your normal cycle
Use some form of contraceptive protections in the mean time