I had nausea and vomiting, headaches, ovary pain on right side just above pelvic bone also and I was very thirsty. The cyst got up to 7cm and ruptured making me look like I was 5 months pregnant, I WAS pregnant though only 7 weeks.
I hope that it isn't a cyst! I have had 2 so far and both were horribly painful.
Good luck hun.