I'm so sorry for everything you have been through butterfly,
I had a bad infection after my CS with my DD1, I was in no way way trying to conceive DD2 but fell pregnant with her barely less then 3 mths later (lovely surprise). I had a pretty normal pregnancy, appart from both being breach but that wouldnt have anything to do with this. Infact this pregn was easier & more enjoyable then DD1. and my 2nd Cs was in no way related to my previous cs or the trouble i had with the infection.
Good luck with getting your DP to agree, I hope everything works out perfectly for you!