The past few flare ups I have had have felt like bad PMS. I ache from my lower trunk to my knees, have shooting pains in my sides, break out with acne and basically feel like my period is on its way - but this lasts for weeks! Last time I had this type of flare up was in June/July and I actually had a pelvic ultrasound to make sure there wasn't something else going on, which there is not. Do any of you have hormone problems related to fibro? Do you ever ache in the way I am describing? Thanks in advance for any input!