My boyfriend and I are TTC we actually had sex 7 days before my period was due. My period was due October 12. It is now the 16th. Every test I have taken has been negative. I have gotten sick a few times and my breasts are SUPER tender. I also had heartburn this morning which only happened once in my life and it was with my previous pregnancy. I should also mention my period last month was late by 3 days. I was supposed to start on the 9th and started the 12th. So this one is later than I have ever been. Any advice? Could I be pregnant?