I loved reading that you had depression spike up after weaning. You don't see that in print too often. I think it must be somewhat common, but maybe some people don't make the connection. I think it is multifaceted too - a hormonal imbalance triggered by weaning, but the predisposition was lying in wait. Anyway, same deal with me - I weaned 6 months ago and just starting to feel a bit better.
During life's big ups it always seems like a down won't come. And then it does, and it seems like it won't pass...but it does. Crazy life :)