CurrantBun - welcome to the gang - and thanks for your words of encouragement. I started off hoping for a 2.10 time for Windsor, then it was 2 hours, and now I'm thinking that 1.50 might just be possible. To be honest it's my first half marathon and I'm not going to go mad, just run it nice and steady. Anyway, am amazed at where I've got to on just 3 runs per week.
thewoman .... I've gone through periods of being really tired ... but now my runs tend to be invigorating. I only do one long run per week, the others are short, in fact my third run is sub 30 minutes.
As for running post baby - I ran a bit pre-kids, and always found an excuse to give up after a few months. So in some ways it's really motivating that time is more pressured now, and that keeps me going. And it's lovely having running as time for me and me alone. Having said that, I find it hard to do more than my 3 weekly runs. Though dp has said he would cover the extra babysitting if I got a marathon place.
I didn't start running again till my second daughter was almost 6 months, but I was still exclusively breastfeeding at that point and didn't find it particularly an issue. I'm pretty tiny, and I just invested in an industrial sports bra! More of an issue than breastfeeding (if you end up choosing that option) is that post birth I was pretty bashed about for the first few months. It took me about 8 weeks to fully recover from tearing (I was fine most of the time, but if I walked too far I would get discomfort). Also the baby (often ) doesn't sleep that much in those early months, so I personally didn't have any reserves for doing much exercise.
Anyway, everyone is different, and it's just like running in pregnancy, you need to listen to what your body is telling you.