I Was Suppose To Get My Period 8 Days Ago

I was suppose to get my period 8 days ago and got nothing. I've been bloated which is normal before I get my period but its been too long. I have been having diarrhea and soft stools, my tummy feels tight, and I'm very gassy. My vaginal discharge has been watery and kind of milky, it sometimes makes me feel itchy a little bit and it has fishy odor. I have a mild throbbing pain on the right side near my pelvic area. What is wrong with my body?