Sharp pain inside uretha when urinating, feels like an object inside penis head. Urine tests neg for all uti/infections. Took doxy 14 days no avail. No discharge or blood any ideas? No kidney pain.

Do not ignore pain with urination. Symptoms you're describing may be related to infection or anatomical problem. Definitely have an evaluation with the urologist.
Possibilities:- Could be a "lacuna magna" (a small urethral diverticulum within the glanular urethra, rethral stricture, u rethral polyp or wart. Consider seeing a urologist for acystoscopic/urethroscopic examination.).