I had sexual intercourse May 30 it is now June 1, We used a Durex Condom so it was protected sex. Lately for the past 3 days I have been feeling weird. I have lower back pain, gurgle stomach after eating, Gas. Pain in my pelvic area. On and off headaches that are not to bad. Frequent bowl movement. My nipple but not whole breast hurt. My period when calculated is due Wednesday . Is their a chance that I could be pregnant . I also have had a lot of pregnancy scares in my life so I don't know if it could be all in my head. But pregnancy or period ?