Hello all? I have a problem which has been stressing me for over a week now and I need help as soon as possible. I had my normal period on May 11 until 14th, then had u. sex on the 15th. After that, I took plan b, which caused me to have another period on the 23rd of the same month. This lasted for 5 days. Then on June 19th, I had U. sex, but my partner pulled out before ejaculating, and it took him 10 to 15 seconds before he came on my belly. Now the problem is this, I was supposed to have my period on the 24th of June, but it did not show up and on the 21st, the 26th of June, and on the 3rd of July, I took home pregnancy tests and they all came out negative. Today is July 5 and I still have no period and am wondering why. Is it delayed because of the plan b which I took May that caused me to have my second period a week I finished the other one, the stress am having about it, or is it because I had U. Sex? One last thing, is possible that am pregnant, even though 3 hpt from two different brands say am not?