Birth control after delivery

Samantha • 31 year old mommy, wife and kindergarten teacher.
Any opinions/experiences on different methods? I'm looking into IUDs, nexplanon and the mini pill since they are safe during nursing. I was set on nexplanon, but started reading about how it could move out of place and that creeps me out. The same about the iud moving into the pelvis potentially. I'd remember the mini pill every day but don't think it's as effective as the other options. Advice please! What's worked for you?