We are a young couple, that is sexually active, we had sex on feb 25, i penetrated her a two or three times and then i wore a condom like always, her period suposed to be on march 9th but it came until 14th , it lasted 6 days, and the only thing that she told me its that she used to change her pad twice a day and this month it wasnt necesary, one daily was enough. she has been feeling light headed, dizzy , nauseas and strong headachee. Its important for you to know that she has a los of stomachal problems , and she suffers a lot of irritations in her stomach (nauseas, vomiting), she went to her doctor because of that problem on march 6th, and the doctor left her alot of exams(even an endascopy) , she asked for vitamins to gain weight and the doctor gave her an pre-natal ones (actavas or activas rx ) for that.. my question is that if this vitamins would give her these symtoms or if its any chance that she is pregnant? even with her period? any answer and explanation will be really apreciated.