Good luck with your result
I never attended a pre-conception clinic at my hospital - I have no idea if they even run them, I suppose they might. I just told my DSN & consultant that we were trying for a baby, they said that was fine but I needed to be careful about my HBA1c - it was 6.9 at the time - and keep it as low as possible. That was the sum total of their involvement until I got a positive!
Both pregnancies were fine from a diabetes point of view. Hard work, with my oldest I was testing 10 or more times a day. From about 10 weeks to 16 weeks I suffered very frequent and sometimes disabling hypos and nobody could give me a decent reason for it until a couple of months ago - my fetal medicine consultant said that it was due to my blood volume increasing as the placenta forms and kicks in, and the sugar in my blood getting spread out more (that's a very non-technical description lol). No idea if that's true, but it did seem to make sense and these hypos are very common for type 1 mums apparently.
Antenatal care is very frequent as a type 1 - this pregnancy I had appointments every 2 weeks throughout, from around 8 weeks. It felt like I lived at the hospital - the receptionist knew me by name before my 20 week scan!
Neither of my children have had problems as a result of my diabetes. Hannah needed cup feeding a bit of formula as her blood sugars were slightly low about 36 hours post-delivery but that was it. I'm not aware of any problems like that for Edward, but he was born at 31 weeks due to other complications and he's still in the neonatal unit (he's just over a month old now).
I gave birth by elective section for Hannah on the recommendation of my eye consultant, as I have retinopathy and he was concerned that the strain of labour would cause further bleeds. Edward would have been an elective section this Thursday, but as I said he's a month old already and we had an emergency section instead.
Once you're pregnant I highly recommend the Babycentre UK forums. There's one for the month that your baby is due and it's useful to read/ask questions of other mums going through the same stuff. There's also a Diabetic group on there, though it's mostly for people with GD rather than other types.