Hello, i have had a pimple on my scrotum for about 3 weeks now i have left it alone because i know it could lead to a number of things.. I have had unprotected sex with 2 partners. From my understanding they have no such STD's. It looks as if it is a pimple that you would get on your forhead and the only kinda symptoms i have if i touch it is a low amount of pain like if you pinched your skin slightly. I am lead to believe that it is not herpes because they show up as sores and outbreaks do not last very long. I am 21 years old and live pay check to pay check so getting to the doctor might not happen for a little while.. Can someone give me any insight on how to calm my nerves on this or what to expect when i eventually do see the doctor. 

Thank you in advance.