It sounds like you are in UK and have trouble getting a referral. the GP is an idiot for calling sugar a poison and not giving you a referral, but, it is the NHS and you need to know how to deal with the NHS. You probably need to repost asking specifically for that, as there are a fair number of UK residents on the forum.

Please write down the thoughts that come up when you are in a lucid stage ("my newborn will need me and will get attached to me" etc.) Laminate the sheets and hang around the kitchen.