Hi Nic,
You are probably just returning to normal. When we are not producing insulin, the body gets energy from fat, where ever it can find it. So basically, the body absorbs energy from any fat in your system, and will continue to do so as long as there is a lack of insulin to cenvert glucose into energy. This is why we often lose weight before diagnosis. I lost nearly 3 stone, and lost even more when I started on metformin. When I was referred to my DSN after 4 years on met, and weighing less than ever, she was horrified I was prescribed it as apparently it is not recommended for anyone with a BMI of less than 25 - mine was barely 17!!😱
Since starting insulin 6 weeks ago, I have put on about a stone, which I really needed to do. Try not to stress too much at this stage about weight gain. Most of it is natural and just returning your body to normal.
Glodee