I am 22 years old, do you think that could be the problem?
Hello.
First of all, don't call it a "problem" because that's not really a problem.
Second: Rapid ejaculation is very normal during the first sexual experiences. I also experienced it when I was your age.
As time goes by you will learn to control it. In fact, masturbation leads to the opposite: masturbation helps sexual performance, however, the problem is that if masturbation goes beyond the normal line and becomes excessive, it will end up leaving you unresponsive sexual. This is why my advice is to handle the topic of masturbation in moderation.
If you don't masturbate at all = Premature Ejaculation.
If you masturbate excessively = Sexual unresponsiveness, PIED if with Porn or low libido, even if you masturbate excessively without porn.
Final Tip: Moderation is the key.