I had erection problems but were gone when i stoped masturbation.now when i masturbate i again have same issues.i m 20 years.what to do?

Get checked out: The longer a man your age goes between ejaculations, the harder his erections will be. You may be experiencing difficulty maintaining an erection with a partner unless you've been abstinent for a while; this generally takes care of itself as you become accustomed to each other & work on finding the many ways to bring each other satisfaction. If there's more, get with your physician.