Pregnancy discharge or period? **TMI**

For the past week my underwear has been soaked with discharge. It feels like I pee myself a bit from how wet my underwear are. It’s comes out clear and stains white. I’ve also been having intense cramps on my sides and headaches. It’s 4 days until my period, I tested and they were negative. If it’s just my period coming it’s weird because I’ve never had this happen before!