ok so I'm not sure if I'm over thinking or if I could be pregnant . my partner and I had sex twice while in my fertal period and once right after . about a week latter I had some dark red/ brown discharge .for a day and a half. with a full feeling in my pelvic area . now I have been dealing with Constipation for about 3 days.thats not normal for me at all . could this be a very early sign of pregnancy or just a coincidence?? any thoughts or has this happened to any one ?