Sounds like it could be Gonorreah (sp?). If it burns while you urinate, it's a good chance.

What I'm thinking though is a kidney stone. That's a calcium build up in your system I think, and it's a small, piece of white calcium that unfortunatly, forces itself into the bladder, then out the penis. It can be removed with a hose going up your dickhole to suck it out, but either or, it's an uncomfortable, painful removal.

I would suggest going to the doctor though. You have nothing to be embarrased about as they see things like this daily.

An STD though? I thought you could only get those if your partner or someone you sleep with has an infection...? If your wife doesn't have any STD's, and you use protection, you shouldn't have got one.

STD's can be cured though if caught early enough, so I would suggest going to the doctor, tell him/her what has been happening, and they will probably take some blood, do some tests on you quick, to find out. Even ask for an STD's test.

Good luck.