Ok so I realise that this is a bit like posting in the Sleep thread and saying I'm worried my baby is sleeping too much! But I am a bit concerned so hope someone may be able to help.
I had a good pregnancy and only gained a stone and a half. All the weight was my bump and nowhere else. I started pregnancy with a BMI of 26. Never bothered me, I'm 5 foot 8 and size 14, and did a lot of exercise so never really tried to diet. After I gave birth 18 weeks ago, the weight has fallen off, to the extent that I am now a stone lighter than I was pre pregnancy! This is despite me doing no exercise apart from long pram walks, and having a diet that consists largely of chocolate and cream filled products (thanks to my ongoing fatigue and breastfeeding ).
I realise that this is a good thing but I am a bit concerned that the weight is dropping without me having to try. I am ebf, so I know that will have an impact, but everything I've read has suggested that weight loss through breastfeeding is minimal at best. I'm not sleeping well and probably burning a lot of nervous energy, plus I always seem to be on the go with baby and housework. Maybe that's it? Also, I've only had the odd glass of wine in the past 14 months - whereas before I loved my wine! So maybe my body is catching up on that?
As I say, I don't want to jinx a good thing here. I guess I just wanted to know if this is normal or if I should be getting a check up from the doctor just in case? I should add that my bmI is now top end of the healthy range so I'm hardly wasting away 
I guess you just know what is normal for you, and it doesn't feel right with me.
Also slightly galling that even at my half marathon training fittest, I never got to this weight!
Any advice or 'get a grip woman and enjoy the skinny' would be much appreciated! TIA.