Hi,
Back story here
After the above thread, I have been back to the GP 3 times. The first time, the GP (different GP from the previous 3 i had seen!) told me she did not believe I had thrush. She said my breasts were giving out
as i was feeding DS1 ( 3 years) and DS2 (15 months) and I had to stop feeding DS1 to feel better!
I told her that I wanted the thrush treatment anyway. She finally agreed to prescribe as it couldn't hurt. So I got fluconazole for 10 days and a cream for DSs and an external cream for me.
I took the tablets and initially the pain got worse before it got better but a few days later I was able to come off pain killers. But by day 7 the symptoms came back! 
I went back to the GP, again different GP from the last 4 (there are many GPs at the practice I go to!) as I was running out of tablets. This GP also told me that my breasts needed a rest and basically had to stop feeding as she didn't think the medicines would cure me. Anyway, she gave me another 10 day prescription for fluconazole (50 mg).
After 10 days , I went back. I was still having symptoms but not as bad as before. This time I was the same GP as the last time and told her I would like a longer prescription as everywhere I have read deep thrush can take 6 to 8 weeks to clear. She was very reluctant as I was breastfeeding and she did not want to prescribe a dosage for so long. I reminded her that I was on the lowest possible dose (50 mg). She then agreed after some googling and gave me a 30 day prescription. 
Now I am now day 8 of the 30(totally day 28 of treatment from the beginning) and I am in pain again 
The pain goes away for a few days and then come back. I don't know what to do!
I have spoken to my local NCT BF counselor and she recommended the probiotic yoghurts and I am having 2 a day of those. I treat the DSs every morning. I use the cream on myself twice a day.
Please, if you have managed to get through that essay(!!) tell me what else I can do. I am worried that I have 22 days of tablets left but if it doesn't work, the GP might refuse to prescribe any more.
Also, I am on a 50 mg dose. Do I need to be on a higher dose for it to be effective? After 4 weeks of taking tablets I seem to be in the same position as before which is very depressing!
I m sorry for the long OP but please could someone help!