Suggest Treatment For Painful Ejaculation

hi I am a 27 yo male. I am highly sexually active . In 2009 I was diagnosed with UTI after having multiple sex partners the same time. I had some white pus come out of penis & had burning on urinating . My left prostate got slightly enlarged. I was given a dose of antobiotics which I took regularly & the symptoms subsided. Some things stayed the same such as 1. feeling of testes being a little tight 2. slower urination 3. Semen is yellowish or pale in color. ( I do intake onions regularly but even when I dont & then ejaculate the color is yellow or pale) 4. Pain slight heavy feeling in testes while sitting its been few yrs now and the above 3 still exist. I have met many urologists .. all acknowledge but say it is fine . 3 days back I ejaculated in bed ( wet dream) but I found it was somewat painful. Yesterday I had oral sex and again I found ejaculation a bit painful. Please advise if there is anything serious ? Also pls advise if there is a test I could do to check testosterone level.