For anyone looking to not have another child right away, another change you have to deal with is getting back on birth control. I tried the Mirena IUD at about 8 weeks postpartum. My husband started noticing that my mood had changed and that I seemed more distant. I realized by looking at my food log that I had a sharp increase the number of nights that I had a glass of wine. When I went to get it removed, the doctor seemed confused and made it clear that she doubted the effects I described were from the IUD, and that it was likely due to other things like cumulative lack of sleep or postpartum depression. A couple months later, I decided it was all in my head and that, now better rested and more in the grove of being a parent, I would have a better time with it. After insertion mood shifted dramatically and I, once again, got it removed. My point is not to convince you that IUDs are bad (some and maybe most people have great experiences with them!), but to say that a lot of things can happen that aren’t confirmed or explainable by science*. A large percentage of medical research is privately funded, and pharmaceutical companies who have the most money aren’t eager to find reasons why some of their most profitable products aren’t wonderful. I have since talked to many friends who have had unexplainable trouble with birth control, and similar invalidation of their experiences from their doctors.
*Note: Though I say this, I am pro-vaccine and generally skeptical of non-scientifically-backed claims. I’m a PhD student and it has helped me both value research and see its shortcomings.