Okay my g/f got her last period on the 27th of June. Meaning now she is about 8 days late. Since her last period she has been stressed like crazy over school, over our problems, has exercised more, and has been going to bed later. On about July 11-14 she has some brown spotting and nothing since. We have only used condoms (she is not on birth control), and the condom has never slipped and there has never been any evident leaks. She says she doesnt feel any symptoms of pregnancy and for the past 4 days she says that she can feel her period coming, because her breasts and ovaries hurt. She usually isn't late, but has been before. She won't take a pregnancy test yet because she has a 8 page paper and finals to study for tomorrow. So based on what I am saying, is there more likely a chance that she is pregnant or that she is late due to the stress? Is it possible for her to miss her period to until her next cycle and not be pregnant?