hi, i was wondering why i might have missed my period, i am about a week late for my period, the last time i had sex was about 3 months ago, i was on the pill at the time and also used a condom, i have gotten my period 3 times since then but i have missed this one, i must also point out that the passed 3-4 weeks i have been off my birth control pills and am now back on them, is my body just getting used to the pills again or am i pregnant?