Burning while urinating. Normal urine.

I didn't had any kind of pain my urine colour was also normal but i felt an unusual sensation while urinating it wasn't pain or burning i did my kft lft cbc and urine examination all turned out to be normal but the test reports showed protein traces but doctor told me that was normal and to drink more water that was a month back test but since a week i sleep on the right side i feel pain or i sleep on the left i feel the pain mild pain that goes away within 5 minutes I don't understand is that pain in my rib bone or kidney on the right side lower abdomen specially but when I touched the rib bone was hurting now i am feeling fine but i still have that unusual sensation while urinating specially when i empty my bladder before going to bed and i am on my periods in the morning i see bright colour of urine and small amout that i have never seen when i have periods but all the day i get normal urine.