Hello CariadBlack,
It sounds like you're really under pressure, which is far from ideal when you're trying to get ready for a baby!
I'm afraid I have nothing to add to the really good advice offered here - I just wanted to reiterate that unburdening yourself to CAB or another debt advice charity will help. You'll get the support you need, you'll have someone to talk to and you'll hopefully be able to make arrangements with your creditors before your baby arrives - which is especially important if your earnings are about to drop as you move onto maternity leave.
Please do seek out some help - often a dispassionate adviser can see things more clearly than the person struggling with the debt.
Good luck,
Felicity