just cause your on birth control dont mean you cant be pregant, i would suggest going to get checked at a doctors office, feeling sick and headaches could be a sign of pregancy or a virus thats going around
Birth control is NOT 100% foolproof. Please take a pregnancy test . I would recommend getting a pregnancy test done via a lab test.
Did you have a normal miscarriage or did you eliminate it?The only reason I ask is because more info would help me make a hypothesis ...