I'm a 20-year old male and on August 10th I went to bed early feeling very tired and awoke early in the morning feeling very lightheaded. I went to the toilet to discover I had brown urine. I went to the doctors and few days later and i explained that I have been feelin short sharp pains in both kidney area and pelvis. She did a dipstick test and discovered some blood in urine.

She said it was probably a kidney infection, the next few weeks I took two courses of antibiotics. The pain I had was short bursts of pain that lasted a second then disappeared. The doctors sent my urine off for testing, results came back showing nothing wrong, however I had still been suffering from these little twinges which occured in random places on both sides, from the kidney, to the pelvis or lower back. Some days they barely occur and some days they happen quite a lot.

My doctor told me it was probably muscular pains, however I still get blood in my urine now and again. Today it was dark brown again. I'm still getting short sharp pains in both kidneys.

Basically, I'm absolutely terrified now. I've convinced myself I have some sort of kidney cancer as I dont know what else it could be, it doesnt seem like kidney stones because the pain isnt severe and I havent passed any stones. I'm going back to the doctors on monday to try and seek some specialist advice because i'm worrying myself so much.