Hi Sara. There is good news - a succssful diabetic pregnancy IS possible BUT...it will take getting your levels a lot better than they are now. That's not a pop at you, as almost certainly (and I'd bet heavily on this!), anyone would struggle to achieve tight control on one mixed injection a day (especially with two kids to wrangle!) and being as you've only been diagnosed a year, it's possible your body is still settling as it were. I've had t1 for 30+ years, at various times on mixed injections, 'mdi' (multiple daily injections) and latterly a pump. I've had 2 successful pregnancies, both on mdi which gave me some flexibility at least & both were very hard work. Please understand that I'm not trying to upset you when I say that you need to stop trying now and start planning & preparing instead. Otherwise you risk your own health and that of any baby that does survive.
Your HbA1c (a roughly 3 month overview of your control) should be less than 7%, and your finger prick results should be between 4-8mmol at least most of the time. You should also be on a big dose of folic acid, to help reduce the risk of birth defects, which is increased due to the diabetes. You should know that a diabetic pregnancy is classed as 'high risk' for both you and baby, but there are things that you can do to reduce this risk - ie hit the targets for HbA1c & finger prick tests and the folic acid (only available in that dose via the GP.) You really want to be on multiple injections if not a pump, as you will almost certainly need to correct high levels throughout your pregnancy, and you can't do this on mixed injections.
I can tell from your post that you don't expect your diabetic team to be supportive, but it's their job to be honest with you and after all if they say 'not yet' it will be for a reason, and if they do (& I think you're right to suspect they will), then they should help & support you, teach you how to manage your diabetes & give you the tools you need to get your control good enough to have a realistic chance of a healthy pregnancy & baby. It took me two years to get my ducks in a row for my first pregnancy, it was frustrating waiting but I did not want to risk hurting my baby by not doing everything in my power to protect them. It was still really stressful throughout, but I could put my hand on my heart & say there was nothing more I could have done. 😱 I really do wish you well, please, please speak to your team. A lot of hospitals have pre conception clinics for diabetic patients now, they are there to support & help, not to be judgmental. It's worth doing right, after all.
All the best,
Twitchy.