I had my 3rd C's 4 months ago and was told during surgery that my uterus was very thin and see through. I asked at my 6 week check up about having one more and he didn't recomend it because of the risks involved, however he said should I choose to have another baby I would need to go to a major hospital and be constantly monitored. Like you I was told I should have my tubes tied but I just can't bring myself to do it and I know there are side effects.
I would like to have one last baby but I think I've reached my limit both physically and emotionally and I'm feeling my age now
Good luck with your future plans what ever they may be