Okay. So I had my normal period on may 22-25. I stopped my birth control and May the 28. On June1-3 I had a 3 day period (possibly implantaion period). My normal period would have started June 19 and lasted to June 22. I had sex with my boyfriend on June 5. It has been 3 weeks. I have taken 3 pregnancy test and all are negative. I have also started my pill back. Could it be me stopping my pill for missing my period or could I be pregnant?