The Non Xmas Xmas Film Is On...
Film, Media & TV1 min ago
No best answer has yet been selected by Barrow4711. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.You could simply be getting reinfected or you could have an underlying cause for the problem. I'd strongly recommend a further check by your GP as a start point.
If it's just simple cystitis, drink cranberry juice, increase your water intake, make sure you have a pee after sex, and consider using a natural plain yoghurt to stabilise your bacterial balance down there!