I am 18 yrs Old,Yesterday I Masturbated Twice. And From today morning my right Scrotum hurts and is tightened and not dropped like my other Scrotum. I am also getting unwanted erection's. Is there any serious problem with my Penis.
What you are describing can simply be due to the amount of time in total that you spent masturbating and the manner in which you masturbated. At your age erections can happen at any time - I would advise against trying to do anything about this.
Given time it is most likely that everything will settle down with what you are currently experiencing.
Give your penis a masturbation break for a week or 2 - then try and relax and try for a short period of time to masturbate.
Remember, the whole process is about pleasure and enjoyment - stay relaxed and go with what feels good.
Don’t forget, each time you masturbate does not have to result in you ejaculating. Try short periods of time when you are stimulating your erections, then wait a day or 2 to finish the whole process off, and make yourself ejaculate.
The whole thing is about trying different periods of time and finding ways to be and stay relaxed about it, and ways of pleasure and enjoyment - you only find this out by doing different things