I only breastfed my dd until she was 4 months because of problems, so I don't think that had anything to do with my lack of sex drive. I started wanting another baby about the time I stopped breastfeeding, which I now feel may have been connected. I began a depression when dd was about 6 months old and it didn't stop until we started trying to have another baby when she was 10 months. Then after trying for a couple months the depression came back until I conceived in May of this year. The whole time my sex drive was really low, and was only good when we first started trying. Now it's much better, and I acredit it to the change in hormones. I think if it happens again I am going to go to as many doctors as it takes until someone will help me because I think the biggest reason I was depressed was because of the low sex drive. I almost went to a psychologist, but I knew it was hormonal, not mental or emotional.
I did try progesterone, and another kind of stuff you put somewhere else, but neither worked for me.
PS. I hope I didn't say anything that's against any kind of MDC guildlines!