I need advice

So, I'm 4 days late for my period. I'm going to list some of the symptoms I've been having. I've been taking vitex because it helps with my pcos. I'm just wondering if it can cause any of these symptoms.

I've been extremely exhausted. So much that I can barely stay awake through work without needing a nap or falling asleep at my desk.

I've been eating like a cow. My stomach is literally a bottomless pit. But then I get sick after eating and feel like I'm about to vomit for a few hours.

I had a yeast infection a few days ago and I never get them. This is the second time I've ever had one my entire life.

Random twinges of pain in my back and lower abdomen, it a specific spot though. Not all over.

A lot of pressure in my back and lower abdomen.

Massive bloating that makes me look about 4 months pregnant.

Excessive crying over weird things that don't really call for that emotional of a response.

And a few other things. So what's going on? Any ideas?