Cramping and breast tenderness

For the last 2 months I have had daily cramping and my breasts have been so tender I can't even touch just wearing a bra hurts. August my period was so light I didn't need pads and had all the classic pregnancy symptoms and September my period was weird! Not to heavy, very minimal clotting and (tmi) it's had a touch of slime looking stuff! I have taken many precancerous test and nothing positive. I have pcos. I'm not sure what's going on here! Any suggestions?