I have PCOS so I'm lucky IF I get my period.... a normal period that is.
The few times before getting pregnant that I got a normal period on my own, I had some back aches that were solved by ibuprofin and that's it. My periods are usually painless.
As for PMS, no mood swings, just usually oily skin, slight increase in acne sometimes, hunger shoots up, and I'm a bit more tired.
After TTC for 3 years prior to getting pregnant, I'm very familiar with tracking my few and far between screwed up cycles... temping, using OPKs, checking CM, etc. Not a fan of CM checking, and I could never check the cervix position (stubby fingers :P). But temping and using OPKs is easy. Can't do temping anymore though b/c of my baby girl