A month or so ago the pain in my nipples was really bad. There were also white spots on them. I did some internet searching and decided I would treat for thrush.
I bought some grape seed extract from amazon. When it came I used it for one day. The typical grape seed extract remedy takes at least two days of dedicated application. We happened to be traveling so I was only able to get in a single day. It's hard to say if it worked. I was also changing my bras much more regularly and washing more thoroughly.
The pain did lessen. Desmond was able to resume nursing a couple of times a week. Was it thrush? I look back now and I'm not sure. There's also a decent amount of literature out there that says breast pain fluctuates during pregnancy. Would I have recovered had I done nothing?
A lot of times when breastfeeding "difficulties" arise, patience is the best medicine. Take a breath, think about the problem when there is no pain or frustration. It may not be a problem at all. It may be a situation that cannot be helped. Or at least not helped with anything other than time.
Breastfeeding is so important to our nurslings that we panic at the first sign of trouble. What kind of mothers would we be if we failed?! First, relax. Second, take a breath. If there really is a problem, there will be serious external signs; baby lost weight, or your nipples are clearly cracked and bleeding, or you have deep tissue pain that is unmistakable. I wasn't sure if my symptoms were thrush or not. Sure, I had pain. Sure, if I twisted this way or that in the light I could see white spots.
Breastfeeding is rarely (if ever?) perfect. Sometimes there is irritation. Sometimes there is pain. That doesn't mean there is something wrong that needs to be addressed. Sometimes all we need to do is stop looking for an answer and relax. In time, it shall pass.