Olives Mum,
Hi darl, don't worry i feel your pain too, it is so hard to keep going but if your really keen to BF you will get through it. i think each different medication works diff for each individual so why not give the medications a try that the dr tell you won't work. Nilstat worked in my bubs mouth straight away. One of the other girls in my baby buddies thread said that nilstatin tablets worked for her (need a dr's prescription), but my dr and hers said it wouldn't. So i suggest giving anything a go, it may just work. Good luck you will get there eventually, a little bit of persistance will pay off.
By the way your doing a really great job, breastfeeding isn't easy.