Suggest Treatment For A Swollen Penis

Hello well last Thursday night I had a bit of a rough night and When I woke up i had a surprise so when I went into the bathroom to deal it and when i finished i looked at my penis and I saw that the left side of my shaft was a bit swollen and there was like a line going across it and it felt a bit hard and it hurt a little when I touched it but it wasnt very painful it just hurt a little so I looked it up on the Internet and the main answer was to leave it alone for like 2 or 3 weeks and it has been about a week the swelling is gone and i think the line is gone but today my girlfriend sent me some interesting pictures and I couldn t control myself but I was very careful and gentle with it I only touched the tip of my penis and it was in a circle motion but I wasn t pressing hard and when I finished my penis and balls started to hurt and that spot where it was swollen and had that line started to hurt too, I m sorry for sending such a long message and I m sorry if I didn t explain anything right I m just a little scared right now and I don t want to brake my penis or something