I'm eight days late for my period, nausea, frequent urination, and greenish discharge...can anything else besides pregnancy cause these symptoms?

pelvic/urinary infe: Yes pelvic or urinary infection.First of all do a pregnancy test at home and if negative see your doctor and get checked for any infection.You can be pregnant and also have infection as you have greenish discharge.

Help My Vagina: You have a broad spectrum of probably issues. You very well may have a sexually transmitted disease. You very well may have a urinary tract or bladder infection. And, if you are late for your period and have had unprotected sexual intercourse you could be pregnant. Get to the doctor!