Hello Welcome to HCM Premature ejaculation is ejaculation occurring earlier than normal time. Masturbation don t result in any complications so don t blame masturbation as cause of premature ejaculation. The problem can be treated with medicines and some non-medicinal treatment. Medicines like Dapoxetine which is a selective serotonin reuptake inhibitor are very effective. The drug is usually prescribed one to two hours before intercourse and it help in prolongation of ejaculation time. Consult a Psychiatrist for expert opinion regarding the treatment. Herbal medicines like Tantax Royal, Confido are also useful. Non-medicinal treatment as Start-stop technique, Kegels exercises are very useful and have good results. Divert your attention from sex during intercourse. Exercise daily and mediation will also help in delaying time. Thanks, hope this helps you