Need help

Okay ladies. I recently am.going through a break up a few days after he left and two weeks before my period or so any time I would drink alcohol I would get so sick I would almost rather throw up. This Has been going on a lot lately. I'm late on my period but the at home test are negative. I really kinda hope I am.but I don't want to get my hopes up. Could it just be stress or could their be a chance and I've had some white discharge back pain and it feel like I need to poop and pee all the time