How can a 32-year-old male with urinary problems overcome the bladder pain and pressure?

Hello doctor,

I am a 32-year-old male with some ongoing urinary problems. Over the past 18 months, I have experienced mild to moderate pain and pressure in my bladder. It worsens if I try to hold my urine, and it is almost always noticeable when I have more than 200 ml of urine in my bladder. Hence, I go to the bathroom twice as often as I used to, especially when I try to hydrate well. This discomfort causes me to wake up once or twice a night. I have learned to manage it by not drinking water three to four hours before bed, but I still wake up at least once. Also, I am usually dehydrated by morning, even when I drink three to four liters of water daily. My previous findings are listed below:

1. A comprehensive blood panel shows no abnormalities.
2. Glucose levels show no diabetes.
3. PSA shows no indication of prostate enlargement. No digital rectal examination has been performed.
4. Urinalysis shows no unusual readings or indications of UTI.
5. Post-void ultrasound shows no remaining fluid in the bladder.
6. I do not have any incontinence.
7. There is no blood in the urine.