Hello, I'm 16 Years Old And I've Been Sexually Active.

Hello, I'm 16 years old and I've been sexually active. I have a girlfriend and we've had sex about three times so far. And just to mention, her genital area does smell a bit fishy. After our recent intercourse, I noticed pain in my scrotum. After a few days of the pain, a cluster of bumps formed on my shaft. They look like white heads on a person's face with acne. There is pain in urination on the occassion. There are a couple that are bigger than the other and there is too many to count. Thank you for the help