Kinda freaking out...

I was diagnosed with PCOS at 17! I have never had a consistent period, and usually only have maybe four of them a year. My fiancé and I have always had protected sex but needless to say I’m worried based on my current symptoms. I had a period last month and am supposed to start today. Still no sign of Aunt Flo. My face is breaking out, my chest is super sore, I’m moody as hell and ovaries have been hurting. I took a pregnancy test and it has come back negative but I don’t trust it based on symptoms. I will also add that I have come off Keto and it makes my blood sugar go up which affects so much.