I never put in my finger or anything in the vagina but whenever I masturbate,by stimulating the clitoris, I get a urinary tract infection which makes my urine smell foul then I develop a discharge and trush. It affects my partner too as we have to live on antibiotics since the doctors say it's a STD.

It sounds like a urine infection, not everyone would class it as an STD, but it is common in women after sex.

The urethral opening is between the clitoris and vaginal opening, so you could have possibly caught the urethra when masturbating. In rare cases, it can even be passed on through a dirty toilet.

X Dani