amenorrhea
"I am currently taking this medication for a missed cycle.  I was told to take it at night due to the drowsiness it may cause.  So far I have not noticed much of a problem with that.  I have been on the pill for 5 days and the side effects are almost unbearable.  I have breast tenderness, but also the muscles around my chest/back area are aching to the point of being painful.  I called my doctor about this side effect and was told that the medication has not been known to cause achiness.  After reading this website I see it is very possible.  I have had some dizziness, sweating, and irritability as well.  Either way the medication seems to be helping, but I really cannot wait to quit it!"