Scorpio - I am sure you can take cocodamol when BFing, I have been given it 3 times after given birth, two make me feel quite woozy but painfree, you should take yourself off to bed with a couple and a hot water bottle.
It's a horrible time but it will pass soon, try to rest up as much as you can (I know easier said than done, I had no one to look after me when I was going through it, and had a 3yo and 18mo to look after) but you will get through it.