Whilst it's not a miracle cure i found oil of evening primrose really really helps. I was in a similar boat to you with pmt for two weeks. Hating everybody including myself, period fir a week, so just one week of normality per month , it was awful. You have my sympathy and i hope it works as well fir you as it has me. Apologies typos, first ever attempt on phone!
I had similar. I didn't want to go on the pill or antidepressant because we were TTC. I found taking a magnesium supplement really helped, along with a low(er) carb diet. There are books on managing the symptoms of PCOS through diet - worth investigating. Obviously don't try to start the lower carb when you're on the throes of PMS! But starting at the beginning of a cycle, you'll notice a difference when it does roll round.