No direct advice or experience regarding gaining weight - my problem is always the other way around! Except that maybe I would look into the thyroid issue. Having one autoimmune disease does increase your likelihood of having more, and Grave’s disease could be a possibility (I have Hashimoto’s myself, but my cousin has Grave’s).
But here I sit, 32 weeks pregnant with our first child. I just turned 34 and like you, I was worried about how pregnancy with diabetes would be. I had a horrible boss who finally quit a little over a year ago, so the stress that I was under from him finally let up and I was able to focus on healing myself and getting pregnant starting March 2017.
RESEARCH IS YOUR FRIEND! I had done a TON of research on getting pregnant, how to work with your body, PCOS (I was afraid I had it for a while, even though I didn’t have many signs), eating right for fertility, and all kinds of things. I would definitely recommend the book Taking Charge of Your Fertility. You can start using the methods now while you’re planning. We successfully used the methods for several years while trying to avoid pregnancy (I had a bad reaction to the paraguard iud before that) and then it only took us 10 months to conceive this little man. Everyone is different, of course. I have a friend who just gave birth to a daughter who was conceived the same month they decided to stop using the methods to prevent pregnancy!
I am honestly not that worried about him developing t1d. We joke around a little when we’re talking about whose eyes we think he’ll have or whatever and I always say, “Well as long as he doesn’t get my pancreas!” But hey, you know what? If he does, we’ll deal. If he ends up with another disease? We’ll deal with it. That’s life. There are no guarantees, especially with kids. If you don’t want them and don’t want to pass your “faulty” genes down, then don’t have them. But there’s no call to judge others for wanting different things.
And I absolutely don’t think you should be terrified! For me, preparation and planning help a TON with taking the “scary” out of this whole process. Maybe you’re the same way. I found a group of great care providers that have been excellent at working with me throughout - and I had to go through SEVERAL who were not right for me before I found these. I got on a Dexcom and Omnipod about 6 years ago, so that has made my diabetes management much easier. I upload my numbers weekly to my team and they make tweaks to my basal rates and I:C based on what patterns they can pick out. First trimester I ran pretty low and it was hard to keep my blood sugar UP. Second trimester things evened out, and now third trimester is still going pretty well, not too much more insulin needed yet, even though I’m prepared to see those huge bolus rates! lol. My a1c started around a 6 pre-pregnancy and it’s bounced back and forth between 5.4 and 5.2 for the last 7 months. My high risk doctor is a bit worried about how large the baby is at this point, but my endo just laughed when I told him that and said, well we know diabetics make big babies! He said, you’re doing everything right, you’re doing everything you can at this point! So that made me feel better. And those size estimates can be off by a LARGE margin too, which is why I’m not allowing anyone to suggest a c-section or induction for me on the SOLE basis of his weight - if there are other concerns, ok, we can discuss. Barring any emergencies, I WILL have this baby naturally. I’ve done my research. I’m not going into this blind. I am planning and preparing. It’s completely doable. I believe in the power of my instincts and my body. I am open to any changes that need to be made along the way. And honey, if I can do it, ANYONE can do it!!
There’s so much more I’d like to share with you, but I won’t bog down this thread, so if you’re interested, you can pm me.