Come on guys, someone has to know what the heck is wrong with me !

This really does not sound like an std. I think that you are probably just having several different symptoms all at the same time coincidentally. The color and consistency differs based on what you consume. Difficulty urinating after ejaculating is not uncommon at all. Some pain/burning while ejaculating might suggest something similar to a retrograde ejaculation or this might be from not ejaculating for a long period of time. This might also be your semen (which is basic) mixing with some urine (which is acidic) if perhaps you needed to pee when you ejaculated. The back pain I think is just incidental. The fact that you hadn't masturbated in a while, probably led you to a somewhat more intense orgasm, which in turn could very well have left you feeling tired afterwards. I really don't think that there is anything to worry about here.

Oh, and remember, ejaculating atleast once every 2 weeks is neccessary in keeping your prostate healthy!

I appreciate your advice cd, and it's much reliefing to know that I shouldn't worry a lot. Thank you guys for taking time to reply me.

Oh by the way guys, can someone explain to me what std is ? I really have no clue about that and I keep hearing about it.

i guess ejaculating via maturbation doesnt necessarily result in a healthy prostate. I mean ejaculation is necessary but it would be better if it is via intercourse. "they" say that always there remains some semen inside after masturbation. It sounds logical. If one can achieve a complete ejaculation via masturbation, then it would be great of course. (actually u didnt say ejaculating via maturbation but it sounded that way to me from previous posts...)

Still no one explained to me what is std ?

sexually transmitted diseases :(

either way, it's just recommended that you do so atleast once every two weeks.

okay, i'm assuming that you are at a younger age and from the question above all I have to say is: please, don't have sex until you learn a lot about stds and all the risks involved with having sex, cause you really don't sound like you are ready to be having sex or anything, yet. I know you haven't mentioned anything about having sex, I just wanted to make sure I said something. Just in case.