during the past two months i have had three full health check ups including a urine test, a swab, chymidia and gonerhea test, HIV test and a physical with all tests coming back negative everytime. during all of this i have developed the following symptoms: testicular pain, abdominal pain, burning sensation when i urinate and a burning sensation under the forskin and a rash on the forskin which seems to disapear after my morning shower. over these past two months ive been told i may have mild case of thrush in which i was given thrush cream to treat it which didnt work. then i was re-tested because my doctor suspected i could have a UTI infection which came back negative. ive now been told that i may have edididymo-orchitis and was given doxycyline for treatment whilst i wait for my results and yet ive been on this medication for a week now and see no change in my symptoms. so i was wondering what could i have? could this be an STI? and if not do i having something would be infectous to somoen else?