I had sex with my boyfriend in the last week of May, and after that I took two i-pills in that week. I experienced bleeding on the 1st of June which lasted for 6 days like my normal periods, though I am not sure whether it was withdrawal bleeding or regular periods. After I missed my period on the 1st of July I have done 4 home pregnancy tests all of which came negative 1st on 6th July, 2nd on 12th July, 3rd on 17th July and the 4th on 24th July. But all the results were negative. I am really worried and I don't know what is happening. Can you please help me doctor as I am really tensed.