It sounds to me like Thrush. I would try taking some Canosten oral capsules to relieve the symptoms. As for the yoghurt, I wouldnt use this as a sure fire method, these are usually only down to the individual, but by all means, try it, it will do you no harm! Re-visit the doctor after you finish your anti-biotics and see what he can recommend.
If you are sexually active I would recommend testing for the regular things, chlamydia, Gonnoreah etc.
Hope this helps Matt,
I had a urine test done and the urologist said everything was normal. I have had sex twice but used a condom and neither my gf or I have had other partners so I know it isnt an STD. Plus I dont have symptoms of an STD either..just an annoying itch. What is Thrush? How do you get it and is it dangerous to have, as in an infection or anything? Where can I buy Canosten capsules?