I was exhausted for quite a while.

One thing that seemed to make a difference was actually going back on the pill (and I waited until I'd stopped exclusively breastfeeding - my personal choice) because that's when my hormones seemed to get back into check. Weird,right?

But as DS2 didn't start sleeping properly (or at all, much) until about 9 months, I was really living on fumes for a while, with a couple of blocks of 90 minutes of sleep over night, with some feeds, and then sleeping on the train both ways. I really feel for you in the exhausted stakes