Hiya,
I found your post on the tag surfer so I hope you don’t mind me responding, I’m a breastfeeding supporter in the UK.
May I ask how often you are feeding? You are right about supply and demand, sometimes you can increase your supply by feeding more often than your baby is asking for food.
Are there any support groups in your area or telephone helplines you could call?
I might be able to give you some more ideas if you would like me to, but please tell me to back off if you don’t want that 
Also, if you would like some support in your anxiety then please do head over to our forum:
http://staffordcafe.forumotion.co.uk it’s a local forum for the groups we run in the UK, but we would welcome you and try to help as much as we could, there’s lots of trained supporters on there, all with lots of different experiences!!
Best Wishes,
Liz