Oh Lord OP - this is bringing it all back for me. I really do sympathise! There's been some great advice on this thread but mine would be as follows:
-there's no substitute for real-life support and face-to-face bf assessment and advice, so find a lactation consultant, bf support worker, bf cafe or LLL group in your area and get yourself to that so they can check your latch and help you realise you're not alone.
-the single most useful advice anyone gave me (and I had an utterly horrendous time for the first two months - bleeding nipples, never-ending cluster feeds, Raynaud's Syndrome in my nipples, floods of tears every time I contemplated the next feed or going to bed...) was, "Watch your baby: not the clock". This was a hard thing to get used to, as it's so tempting to fixate on how long your baby feeds for and how often, but in the early days, it really almost doesn't matter. Number of wet nappies is a much better indicator of how much she's getting.
- practical measures: don't be afraid to whack on the lansinoh and if poss, leave your nips out in the open air once you've applied it. I found washable cotton breast pads less painful than disposable ones. Keeping my nips warm (handwarmers between two bras...) helped with the Raynauds. Eat as often as possible and remember how many extra calories you're burning -a biscut jar within easy reach was vital for me! Take the vit D and folic acid supplements you took whilst pregnant. The LLL website has load of useful info and resources, as does Jack Newman's website.
- I find a dummy v helpful for getting my son off to sleep when I think he wants to comfort stuck, but I only let him have it for a few minutes, til he's asleep, then I whip it out so he doesn't wake up with it in.
I can honestly say that bf is a completely different v experience for me now to what it was when I was at your stage. I'm so glad I didn't give up (and God knows I HATED it with a passion back then). But my son is now 4mths and ebf, and I can't tell you how proud I am of that. I know I made the best decision for me and my son, but yours may be different - ff is the best option for some mums, and categorically NOT a failure.
Stick with it if you can, and come back and keep us posted!