So for the past few years I've been on birth control and my bf and I are TTC so at the end of my last cycle I stopped taking my birth control. My bf and I have been having a lot of sex this month and I've already taken 3 tests that say negative. I just finished my ovulation week 2 days ago and I started cramping today and my stomachs been hurting the past 2 days and when I went to the bathroom there was blood on my underwear. Is this because I'm pregnant or because I stopped taking my birth control?