Also - avoid the run of the mill, off-the-shelf creams for nursing mums they don't help (IME) and are overpriced - I've never used the one Hazel is talking about - in fact I'm not sure it exists by that name* - the 'butt paste' is apparently great, but I can't find anything on the 'Tit Cream' (creme) maybe he means the butt paste - a zinc oxide could help - I have a different brand equivalent zinc oxide cream with almost identical ingredients and it really is multipurpose stuff - brilliant for wounds, cracked skin, overnight pimple zapping - everything.
Other than that - have you tried lip balm? Sounds silly - but try a moisturising lip balm if you can't get the Boudreaux's or the PawPaw stuff. A good quality moisturising lip balm will certainly aleviate your discomfort - either apply at night only or, as suggested already, get yourself some nursing pads to prevent staining your bra / clothes.
The drinking more water suggestion is good too :smile: Good luck, hope it sorts itself out.
* No offence HG - a friend is having a problem nursing at the moment so I looked up the Boudreaux's online to see if I could order her some and I just don't see it - are you sure of the product name?