Re: Can latex condoms cause these symptoms?
IF it's very sensitive, soap can be irritating to the penile mucosa (the end or inner parts of the penis) and even if it's not too sensitive, it can be irritating to the meatus. But you probably noticed that hurts when you were young. You aren't irritating yourself with soap now are you?
I think it would probably have hurt shortly after washing long before now if it were just irritation from soap. Could the irritation possibly be because you are becoming allergic to latex? (Incidentally I like polyisoprene condoms a lot better (skyn, supra, etc), because latex increases friction too much and smells like tires.)
But there should never be any discharge just from irritation. Your symptoms sound like a bladder infection or other UTI. Sometimes irritation can encourage an infection to take hold, so that might be what happened. I believe a white discharge suggests yeast.
That you say you have an uncomfortable sensation after ejaculating makes it seem like the infection must now still be affecting at least your prostate or seminal vesicles.
IF it's not an STD and just a more minor yeast or bacterial infection, cranberry can help you overcome it more quickly. Other things for any sort of urogenital infection: stay hydrated and avoid milk/cream/creamer and sweets until you're definitely better. (When you have an infection, sugar and these forms of dairy make it harder to overcome the infection. I might add that I like dairy otherwise.)
You want to be careful in monitoring the infection even for a minor one (like this might be), because if they migrate (like to the prostate/testes/etc.) or otherwise get worse, they can be significantly harmful. If symptoms don't improve or if they get worse, I would see a doctor right away. Or just to get any real medical help.