Hello. A good six months ago I treated cystitis. Unfortunately, I went through them quite hard but I cured them to the end. Now during the day everything is fine. I defecate normally I do not feel pain or burning or other unpleasant ailments. However, a few days before withdrawal bleeding (usually it starts about 14 days before the planned withdrawal bleeding) always in the evening before bedtime, because during the day it does not, I have a huge pressure on the bladder. This usually starts during the evening toilet. Bathing, brushing teeth, face care.. She always urinates before bedtime, but I continue to push my bladder until I go to bed, which is generally it takes about half an hour maybe not even. Then I wake up in the morning I go to the toilet in the morning and it is okay all day and in the evening it is the same and it is so until the end of the withdrawal bleeding. Then for a while wgl calms down and even this is not in the evening and then somewhere in the middle of the cycle again the same thing. I will add that I do not feel pain or burning, nor do I often urinate. There is simply the pressure on the bladder itself. If it matters, I take the combined contraceptive pill. I am almost 20 years old I have never had intimate infections and the examination at the gynecologist is always okay. What could be the cause of this? Best regards