what's going on?

Alli • Grace 10-8-18 ❤️❤️
My period last month was very minimal, like 2 days with only a tiny bit of brown, not even enough to use a pad/tampon. I was thinking maybe it was my PCOS. Well this month, it was supposed to start last Tuesday, today is supposed to be the last day of it and it never started not even a tiny bit. I've taken 2 tests and they both came back negative. Ever since I got spironolactone for my PCOS my periods have been normal. I've also felt randomly nauseous but it goes away pretty quick, and I feel incredibly bloated and I am craving chocolate like CRAZY, way more than normal. I am planning on going to my OBGYN, but I work the same hours as her so I will need to try to arrange something. In the meantime though, anyone have a clue to what might be going on?