Im having exact same syptoms and I am not seeing or sleeping with anyone but my girlfriend. I dont think she is cheating but it is worrying me a bit. Normally the inside of the shaft is pink but right now it has an off pink very faint tinge of brown or red like when something is irritated or inflammed so im gonna go to the doctor after work. every so often it will throb with a very faint pain just enough to let you know its there. It hurts when it comes in contact with my underwear or my pants. the discharge is very clear looks like pre-cum or something sometimes its sticky sometimes it seems urine
clear penis discharge is not that huge reason to be worried about. It is quite normal to have it. But the pain is not normal and you should find the cause of it. The pain that I had was strange, it was not sharp or something similar. First, we did some urine analysis and I was infected, so. my doctor prescribed a 7-day treatment of Cipro and I felt good. But the pain came back and I visited him again. I had gonorrhea. My doctor discovered it on time, so antibiotics worked for me. But it was a different doctor. So, if sometimes you do this test and your doctor told you that you have a diagnose of urinalysis, you should know that this is not generally useful in diagnosis and you should find a cause to treat it. A proper cause.