Don't worry dear, your problem is due to young age as well as sexual thoughts and also dilution of Semen , first of all U rectify your thoughts,read good spiritual books e..g. Swami Dayanand G, Vivekananda's literature etc to divert your mind, don't see porn sites Take tab.ashwagandha,cap Satavari 1 each bid for 3 months
Next Steps
U can consult online through Practo
Health Tips
avoid red chilli tea coffee Kadi sour curd, spicy food , Masterbation etc Do meditation Bhramari pranayam Sarvangasana Shirsana etc early to bed early to rise (4 a m )