I had unprotected sex with my boyfriend two weeks ago before my period. 5 days after, I had my period. It was heavier than the usual but lasted for just three days. After 5 days (12 days after the intercourse) I had another bleeding. It was light and I only joticed after I wiped. It was just for a day. I am experiencing frequent headaches. I feel dizzy sometimes. Now I feel that my vagina seems to have tightened. Am I pregnant

Doubt it but not entirely impossible,