"haven&rsquo;t even had it on for a full month, but it&rsquo;s not to bad. the first week i put it on my hip bone/ pelvic area. had no problems other than very little cramping here and there. although i do get moody some days, other days i&rsquo;m fine. it&rsquo;s hit and miss. so that kinda sucks for my bf cuz i feel bad for snapping at him. but the second week i put it on my butt right before bed. the next day i was extremely nauseous and got the worst migraine ever and even felt feverish. i moved it back to my hip, but on the opposite side as before and the symptoms went away after a few hours. yay! i would recommend maybe staying away from meaty parts of the body. i think it might absorb it a lot more, is. but i&rsquo;ve heard from other moms that said the same thing"