What Causes Burning Sensation While Urinating After Intercourse?

Respected sir

I belong from pakistan, married from seven years and two childerns.

My problem is that from last few year my penis in normal condition always rest to lts left side and for urination i have made it straight with fingures. In erect condition it is ok and a right straight like normal penis. I also feel very burning pain when i urinate right after sex.

Kindly guide whats wrong with me and what kind of test could help me. I shall very thankful to you for this help.

Regards