I got my first shot about four or five days before the last cycle I had. It was lighter and less horrible. Still had cramps, but they kicked in later, and went away faster. I haven't had one since, but a little bit of cramping that flares up at random points and then goes away. Talked to some people that said it's my organs dealing with being given less blood flow and perhaps shutting down. It's really not bad. For all of this who are dealing with periods... I would get your levels checked. You might just need a higher dose, and it won't do any harm to raise it just a little (at least, in most cases -- obviously consult with your doctor).