Had,unprotected sex from january 30th through almost all of february. and a few times in march. had sex during fertile and ovulation window. period is sox weeks late. help?

Can check preg. test: In a woman with regular periods, some causes of a late period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (like birth control pills), hormonal imbalances, etc… Seeing a doctor is a good idea if symptoms are persistent, recurring, or worrisome. PREGNANCY is the common cause of a missed period, if sexually active.