Hi, i have a habit of visiting shemale sex workers. I never have sex. Only protected oral. Today i found a pimple like bump on my scrotum. About 3 weeks ago i received a protected blow job where my scrotum was also licked. I allowed it as i had thought that licking the scrotum was of no risk. So my question is if i all of my encounters are oral sex which is condom protected, but this one time i got my scrotum licked, is that a risk for std? Also is my pimple like bump indicative of any std or is it normal to have a pimple there? Also, i squeezed it and a little puss and blood came out. Thanks for the help