Is this an ovarian cyst? When should I go to the hospital?

Anonymous
I recently got diagnosed with pcos. I am still suspected with endo. However I'm just going to put symptoms in dot points;
- 4 days ago I was getting really bad bloating (died down a lot by yesterday).
- I was getting sharp pains in lower left pelvic area.
- at the same time the bloating started, I was getting lower mid back pain that would hurt when I bent
- two days ago I felt extremely sick. I became dizzy, lost colour, almost passed out and my body was shaking lightly.
- I have been extremely thirsty no matter how much I drink
- when I go to the bathroom, it feels like pressure (a little pain) in my pelvic area when I push
- I have to keep urinating every 40 minutes (more or less, approx)
- sometimes the pelvic pain radiates to my upper thighs
- I'm now struggling to go number 2
- today I had really bad pain in my back (closer to the waist). It was on the left side and felt like something was pushing into me. It hurt when I breathed.

I'm mid cycle rn, but not ovulating. Also the pain is on and off.
I threw up all my food today. I'm always dizzy, especially when I first get up. I'm not pregnant either.

Please help? What's going on? What is it? And when should I go hospital?
Is this an ovarian cyst? When should I go to the hospital?
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