Ok'So I had unprotected sex various times,indeed knowing the consequences,When my period was one week late I took a test&it came out negative,3 days later I took another test,once again negative,when my period was 15 days late,I got what seemed to be it.Yet. It only lasted 3 days,the first day I actually vomited because of it,second day normal,and lastly third day,I had excruciating abdominal pain,then "period'ended right after the pains stopped.What could be going on with my body? &Sorry for such details.

Do you usually have very regular cycles? It may be you were pregnant and had an early loss. It may be that you are pregnant, and seeing your doctor for a possible blood test would be in order. Could be just an off cycle.

See what happens when you would expect the next period. If it doesn't show, or is unusual from your norm, see your doctor for a test there. If not pregnant, they can check into other possible reasons.

Since you are having unprotected sex, treat yourself as if you could be pregnant. Make good choices in what you eat and drink, and take a prenatal vitamin, or a multivitamin, with at least 400 mcg of folic acid in it (most will have this, if not more).

Thank You&I usually have regular cycles"that last up to 5 days.I am thinking it could have been an early misscarriage,yet Just hoping for the best.But I will take your advice into notice.