I didn't think it was worse than labour at all, just uncomfortable, but you can have pain killers for it.

The pain can be stronger the 2nd or 3rd time around as your uterus has to work harder to get back into it's pre-preg state, but if the pain was worse than labour, I would be checking with the Ob or the GP. I'm sure they could be given something for the pain and / or be checked out to make sure all is as should be.