So I had unprotected sex the other day and she said she was clean. 2 days after I look at notice a red bump at the bottom of my shaft. I popped it and pus came out and it had a bad smell to it to. After it popped and the pus was gone some white liquid would come out of it. It's be close to a week and the bump is still there. It's just a simple red bump, doesn't itch and o my hurts (not alot at all) if I touch it. I'm scared to death right now. This is a picture of it, you can see the red bump at the bottom I did just pop it: https://ibb.co/dO8KwF
If a better picture is required to get a good idea of what it may be let me know.