I am now 3 days late. I typically have very regular and heavy periods. My last period started on May 25th. I had unprotected sex twice, June 12th and 19th, however, my partner did not ejaculate either time. I started spotting and having some brown discharge around June 20th. On the 22nd (the day before my period was due to start), I started to get worried, so I went to planned parenthood and took an emergency contraceptive, Next Choice. I continued to have brown discharge, but now it has completely stopped and I never started my period. Although I did have all the normal signs that I was going to begin my period (lower back pain, cramps, etc.) I have taken 3 pregnancy tests and they are all negative.
Any suggestions or information you can provide would be greatly appreciated.