Getting an IUD after a c-section?

I am 10 weeks pregnant with my third child. My first two were born via c-sections. I want to get an IUD after this pregnancy is complete, but I will be having another c-section. Does anybody know how long I have to wait to have an IUD placed after having a c-section? I plan to nurse my baby and was wondering what form of birth control can I use immediately following giving birth until the time I can have an IUD?