Help with b.c decision

Hey ladies. So I recently delivered my first child April 5th. I have never been on birth control and don't really want to but I feel I need to .. we want more children but probably going to wait about a year or 18 months before trying again. We want to be sure we can afford another one as well as that my body is healed. I have heard alot about the iud and that's what my ob suggested since I can't remember to tk a pill and my fiance refuses a condom .. I'm scared with an iud it's gonna cause period issues or take longer to conceive once I get it removed .. what's everyone's opinions and experience.. any info is appreciated ... as much as I don't want b.c I'll end up pregnant before too long if I'm not on anything. Thank you