I am 20yrs of age. About one and a half months ago i received a handjob and kissed a prostitute. The kissing was for 5 mins and she used lips but i didn't. After the act the next 2-3 days i experienced kind of s tingling sensation in my penis. The doctor said it is maybe due to the climate. After that there were no symptoms semen was normal also the urine but after some days after i masterbate the inner shaft of my penis has started to turn red as if it is due to friction but this didn't use to happen earlier.Am i at a risk of STDs? Do i have to get any tests done because it is really difficult for me to go to a doctor for these tests.. Please help..