My girlfriend is pregnat and she has been spotting for a week?

Probably OK: About 1 in 3 women will have spotting or bleeding in the first few weeks or months of pregnancy. Most of the time it is due to implantation bleeding, but it would likely require an ultrasound to be certain that the pregnancy is viable.. She should see her doctor.

Needs checked out.: May or may not be an issue. Depends how far along. Spotting/bleeding never a good sign but may not be a bad sign. If early could be a sign of possible miscarriage but sometimes happens for unknown reasons and means nothing. If pregnancy established could be due to multiple reasons. Provider should help clear that up. No matter how far needs to let provider know if has negative/unknown blood type.

Depends: The causes vary depending on how far along she is in her pregnancy. 1/2 of all pregnancies have some bleeding in the first trimester. Of those, 1/2 go on and have perfectly normal babies and no one knows why. The other 1/2 do end in miscarriages usually because there was something the matter with the baby. At the other end of pregnancy is "show" which can be part of labor starting.