birth control
"Took almost 3 months of this pill. First month went fine. Almost no side effects. felt less hungry during first month. 2nd month - felt nauseous at times, slight headaches. Bleeding was very light , lasted maybe 1 day or 2. 3rd month - started having stomach pains- and lower back spasms. Couldn't find other cause of spasms -  I had no injury etc. Until I found a rare side effect of this med could be spasm. Stopped taking pill midway of the 3rd month couple days ago...haven't felt a spasm since. Back to square one"