Oh thank god guys. I got my period today, after 9 months of not having one.
Though the nausea has been going on for a month, it was only the last two weeks things were getting bad. Classic PMS symptoms for me are indigestion, bloating, and being exahusted. That was something that was scaring me because I could hardly stay awake. But that is super common before my period.
Even if it doesn't explain everything it explains a lot.