My last cycle was 10/20. I was supposed to start on 11/16 (according to my Ptracker app). I am now 3 days late. I had sex for the first time on 11/12 and it was unprotected (he pulled out before ejaculation which I know is not necessarily the best thing to prevent pregnancy). I am currently on birth control pills and am normally good about taking them at the right time. I missed my pill on 11/11 and doubled up the evening of 11/12. I took Plan B on the morning of 11/13. I currently have an UTI and I am not on antibiotics. Just taking Azo for now. Is it possible that I am pregnant or am I merely stressing over it? I read that Plan B can sometimes delay your cycle but I am still worried. Any advice would be appreciated.