So yes we all know the dangers of having unprotected sex. My Bf and I did a few times while on my period. I have a light flow of only like 2 days tops so don't go saying it's all gross and what not. We have all been there before lol some things just can't wait. Anyhow, I'm cd 13 and for the past week I have had heartburn, mild headaches that go away quickly, upset tummy and terrible cramps. All of this is madly similar to my pms that I get about 2 wks before my period so do you think I could have conceived during my period?