My girlfriend and i have recently started becoming sexually active. The first time we had sex we were worried about her period and it was about 2 days late but she said it was otherwise normal like it was not spotting or something else. Everytime we have had sex we used a condom correctly. Now she is like 3 or 4 days late and she says that she has no more symptoms of pms(which she had like a week ago.ex..cramps/cravings/fatigue) she has been a little stressed lately and isnt getting a whole lot of sleep but she is usually regular on her period. Is there a chance we should be worried about pregnancy? We are worried please help!