Someone HELP! TMI btw

My period is is late by 10 days, I have had white discharge the whole time I was supposed to get my period. And I am supposed to start ovulating on the 28th, I took 2 pregnancy test last week and they were negative. I keep getting cramping and burning like my cycle is about to come on but it never shows up! Any idea what could be wrong? I always have a regular cycle each month so not sure whats going on