Hi doc,I just want to ask something I have my first time sex last 31th of May and after a week I have my menstruation which falls on the 2nd week of june.Now ,its july but I only have a 1 day menstruation or I don't know if it's menstruation last week on the 16th day of july.Now I am worried,can I be pregnant ? We had unprotected sex but we did the menstrual period.How can I stop it if ever it's really confirmed ?