Sex on period 4weks ago take birth control. he cummed in me twice.since then felt sick with cramps. can i be present.

See details: Anytime you are foolish enough to permit unprotected sex there is a chance of pregnancy. However, intercourse while menstruating is not as likely to cause pregnancy as sex during the time of ovulation.

Pregnancy: If you had sex during your period, it is not possible that you get pregnant since you were not ovulating. However, if you missed a pill you might be experiencing breakthrough bleeding and that is not your period and then you can get pregnant that way and have the symptoms you are refering.