Newly Diagnosed Gestational Diabetes..anxious An Have Loads Of Questions..help

You can't change what's past. So just try your best from now on.
Have they given you a test meter? Target blood sugar levels? Medication? Extra scans?

Waiting 5 weeks seems unreasonable given the circumstances, then you'll be at 34 weeks. Please call your midwife/GP to ask for more support as you should be given more scans to check growth.
In the meantime as you are not using medication try to stay away from too many carbs - bread, pasta, rice, cereals, potatoes.

Keep us posted and congratulations on the pregnancy.

And this may help

https://www.diabetes.co.uk/gestational-diabetes.html

Hello @Ciara86 I also had GD and it wasn't picked up until 23 weeks, it explained my lack of energy, sweet tooth etc, I was put straight onto insulin, no dietary advice as such, I felt like I was stumbling round in the dark to be honest and it was a shock to be diagnosed. The issue I had was that my blood glucose levels were feeding my baby so she was born with a high birth weight and I was induced at 37 weeks too for this reason. Apart from this all was fine with my daughter though.

You need more support than 'we'll check again in 5 weeks' so as @Diakat has said call up your DSN/Midwife and ask for more support.

Try not to worry though, stress doesn't help you or baby, but if you can avoid sugars/carbs etc and replace with protein, veges etc, please let us know how you get on ?