Penile Veins

So I did not know what area to put this in so I just put it in general health. Recently in the past week, I have noticed veins that have popped up on my penis. I am 17 years old and I don’t think I have the rare Mondors disease. I would not say the veins are swollen but they have popped out and I can feel them. There is no pain, one has popped up on the top, one on the left side and one on the right side. I would really like to know what the biggest possibility is. I can repeat that there is no pain at all, I hate the look of them and I feel like it can be an issue.

Jordan

Also I feel like I am getting softer erections