I am 25 years old, and I have not been on BC for about 8 months. My last normal cycle was December 7, 2010. I have had unprotected sex with my boyfriend, however I have taken 5! HPT, the most recent was Feb 17 (yesterday). All tests are negative. I have no real pregnancy symptoms, however I have had some weight gain (around 10lbs since December), and some mild heart burn (but I believe I was getting that before I started missing my period) I haven't been overly stressed out, and I eat fairly normal. I do smoke cigarettes, I have not been on any medications.
I have scheduled an appointment with Planned Parenthood... Any suggestions on what could be wrong??