Thick white discharge,alot,slight itching,tender nipples,slight cramps,had unprotected sex 2 days after last period,period due in 1wk. preg or pms?

See details: A lot of discharge with itching suggests vaginitis that is most likely from Candida (yeast). You should be checked by your GYN. There might be more that one infection. The other symptoms can be from PMS. If your period is not due for a week, and you were pregnant, the egg just implanted and would not cause symptoms yet. Wait and see if you get your period. Do a pregnancy test if you don't.