I'm sure that if you use it judiciously, without overuse, you won't have any problems. Just for pain relief, and only once or twice. The worst of the cramps should only last one day or so.
You might want to talk to your doctor about widening your cervix; I found that the birth of my first child totally stopped the horrible cramping. The opening of the cervix was no longer so small that the terrible clots couldn't pass.