Huge hugs to you - I hope you find some peace and take the other excellent advice already given.
I know it's a worry. My mum was type 1 diabetic and deaf, and actually advised (the good old 1970s) by everyone not to have children, due to problems managing type 1 pregnancies then, and the risk that I'd be deaf (and also the assumption she was incapable because she was deaf). I'm thrilled that attitudes and technology have moved on exponentially since then.
I'm very glad, on my own behalf, that she ignored the worries. I didn't turn out to be diabetic or deaf as a child and she was a great mother. I started going deaf in my 20s and have now lost almost all my hearing. Diabetes, I had problems in pregnancy at age 30, and was probably prediabetic since then, but it's only this year at the grand old age of 40 it's really been a big issue and I was diagnosed as type 2. But in both deafness and diabetes, management and technology mean that what I face and have to deal with is very different to what she did.
Deafness: my mum was very isolated from communication, even within our own family. Me - I think I have an almost normal life. I can text and hear and talk on a mobile phone, I can hear my family and friends, I can hear the TV, I can go to the theatre and concerts, I can go out to museums and farm parks and be fully part of my family's life. All due to super duper hearing aids and extra devices and a cultural awareness that didn't exist when I was a child. Diabetes: well, if I eventually get diagnosed as a type 1, I don't know what the technology or management of things are now, but I'm assuming that the giant insulin syringes and weird glass vials of things that my mum had to sterilise all the time are not part of it.