Some background: DD is 25 months old and still nurses 8+ times a day (about every 3 hours, day and night). She had some eating issues early on, and she wouldn't really even take solids until she was 14 months old. She didn't start eating then in any real quantities until she was 18 months old. She also has a dairy sensitivity, which she has started to outgrow, but I still can't give her cow's milk unless it's been baked into something.
OK, now here's the problem: DH and I want to have baby #2. My cycle has been back for 15 months now (when DD was 10 months old), and we've been having well timed intercourse every month since then. Before I got pregnant with DD, I was subfertile - I had two miscarriages and then a year of infertility.
My question is two-fold. First, I have heard from other women that in some small number of cases, there are women who cannot get pregnant until their child weans. Is that true, or is that an urban legend? Could nursing my daughter (even after my cycle came back) be making me less fertile than I already was? I've also heard that nursing hormones somehow block some other hormones (estrogen, I believe?) and that it could still decrease fertility some, although not enough to be used as birth control for the vast majority of women. But I don't know for sure, and I would hate to make a decision like this based on bad information.
Second, if we have to go down the road of fertility treatments, how compatible are those with nursing?
I'm so confused as to what I should do. We really do want another child soon (we would have preferred to have another one already), but it makes me sad to think of weaning her early. But at the same time, I'm not getting any younger or more fertile, and if I have to wean her to get pregnant again, I would like to start it very soon so that I can do it as gradually and gently as possible.
Thank you for your help!