amenorrhea
"This drug is effective at inducing a period, but it has AWFUL side effects.   Basically, you will feel pregnant--tired, dizzy, hungry for junk food, and BLOATED.  My breasts grew half a size within 3 days of taking.  Then the rest of me caught up and I gained 5lbs in the 10 day time frame that I took this drug. But it did do what it was supposed to do, so I can't totally complain."