Hi Sobriety
Last time I had a good length sobriety (304 years) I found I put on weight for the first six months (I couldn't understand how either!) but then I started losing it again and ended up a lot lighter than I started. I went from about 90kg up to somewhere between 95 and 10kg, but then dropped down to 80kg slowly without every really trying.
But mostly, well done on 40 days. That sounds a brilliant start. I hope to be there in 36 days time