sorry if this has been done before- but could this be thrush in my 4 week old?

[fairylights]

Breastfed my first baby happily and without problems and it has been fine until just now with dc2 but in the last couple of days my
boobs have become really sore and have little nicks in them that are agonising when she latches on. I thought maybe her latch was wrong but now that i have looked online at some sites i wonder if it is thrush? The inside of her mouth is quite white but i thought this was because she was a sick-y baby who had remnants of sick in her mouth (?!) She also has had nasty nappy rash since early on..
if i go to the GP can they definitely diagnose it and what can they do?
tia!

Your gp will diagnose it, give you drops and cream and all will be well again.

They'll diagnose it in the baby and will treat you both at the same time- we're going through this at the moment. They can't diagnose you 100% as there could be other causes but if the baby has it it's more than likely that's what your nipple pain is. I also have the little nicks and latching-on pain- you have my sympathy.