Unknown pain in left lower abdomen area, along with urination problems

I'm a 22 year old male, 6"2, 170 pounds, athletic, play sports and do cardio workouts regulary. For about a year or so now I've been experiencing an annoyingly dull, and sort of a burning sensation pain in my left lower abdomen. To be more specific, it's 3 inches to the left of my belly button and about 2 inches down from there. The pain is always on the left side and never on the right or middle. It never goes away for any period of time and gets worse when I eat, or drink a lots of fluids at one time. I've also experienced what seems like a bubbling/bloating feel and sometimes I can actually hear my stomach rumbling/growling. It's very weird and freaky.

For example: If I have to urinate very badly the pain is worse, then I will urinate, and the pain will go back to it's normal level. This repeats over and over each time I have to urinate. It's specifically bad when drinking beer or alcohol, and I have to go to the washroom after EVERY beer. This never used to be the case in the past. Whenever I drink something, even a glass of water, 20 min later I'm running to the bathroom. It doesn't hurt to urinate, I just have to go a lot, and a lot usually comes out.

I also feel fatigued, like my muscles are weakened for no reason. I often feel like going to sleep early, or laying down for a nap - even though I don't want to.

Something else to note, though I don't know if it's related or not...

I've had a persistent cough for over a year and it will not go away. It's not due to a cold of flu, obviously. I cough day, evening, night - it doesn't matter, it's always there. People often comment about it, asking if I have a cold but I don't know what to tell them because I know it's not a cold. I fear it's an underlying issue of some sort, and possibly related to my above issues.

I've been to the doctor for an ultrasound, blood test, urine test and they all came back without results. I've been on several kinds of anti-botics and they've not done a thing. I'm not sure what I should try next.

I was reading a post on here about a similar issue and the person diagnosed it as 'Prostatitis'. I've read the article according to '' and it is quite accurate of my symptoms. But there are so many other things that it could be it seems almost impossible to pinpoint it. Too bad my doctor doesn't think outside the box.

Has anyone any these types of issues or have any idea what the issue could be?


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