My boyfriend and I had unprotected sex and he ejaculated in me…. there’s 3 days till my cycle is suppose to come… I’m not on birth control… so I’m just wondering what’s the chance.. if there’s one to becoming pregnant… also Tuesday I had this really like pink blood maybe but only when I went to the restroom.. this morning there was nothing then around 11 o'clock it was light pink then bright red then back to light pink.. in between it would stop but nothing ever on my panty liner only when I went to the bathroom. I've also been having like mild cramps I've never had cramps before.