Thanks ladies.
Just hearing that its normal is a huge relief. DS1 did cluster feed. Just not to this extreme. He was a vacuum cleaner and screaded my nipples so totally different problems last time.

We dont have a sling. But I will try the lying down while feeding and feeding him every 2 hours during the day. I phoned ABA.. and they where saying similar things to all the great advice from you ladies. So ill give it all a go. I hope that this knowledge will at least keep me some what sane tonight! Knowing its all normal and there will be an end to it.. just not sure when!

THANK YOU ALL SO MUCH FOR YOUR ADVICE!