I doubt very much that you have undone the repair, I also had my uterus lifted many years back and I often get a tugging feeling that really hurts when moving or lifting heavy boxes, I think its just the scar tissue and the muscles objecting, you will be fine, I have to remind myself not to, the other day I was shoving my heavy bed over to clean underneath and felt the sharp pang again, you need to remember that the muscles etc will never be strong again after the surgery but I doubt any damage has been done, perhaps just an anti inflamatory for a day or so until the pulled area has recovered.