Yep, I got mine back when dd3 was about 18months and it was horrid. I was barely able to move without being in pain, painkillers didn't work either. Every month since then they have been horrid. I would spend days on the lounge or in bed, most days I couldn't stand up either.
I ended up changing my birth control, which has helped heaps, so far the pain is less and a lot of other pains seem to have lessened or disappeared too.