Doctor i developed a urinary tract infection in penis head after masturbating do you think its internal infection and facing erec. prob due to this ?

Here are some ...: Without a look at it, it's hard to offer an accurate Dx. But, clinically, what you described suggests the occurrence of inflammation / infection, i.e., balanoposthitis, which is usually caused by yeast and related with long foreskin. You may try topical thin use of anti-fungal-steroid cream 1-2 times after cleansing and drying the affected area for 3-5 days and see. See Doc timely for detail...

See my renarks: Urinary infection- UTI-does not happen with self-stimulation,unless you "inserted something into the opening of penis" UTI is manifested by burning,urgency,cloudy urine +/- foul smelling urine.fever ,.all of above or some. I hope I answered your question