Many factors can be responsible for the problem... Detailed information is needed.. Your problem of premature ejaculation is most common sexual problem in all ages of men. Fortunately it has high recovery rate through ayurvedic medications. 

I am explaining you briefly about premature ejaculation so that it will eliminate your fears. 
In premature ejaculation men come out very fast, Men gets discharged either before penetration or immediately after penetration, they hardly get some strokes. So the female partner remains unsatisfied. 

This may be due to so many factors like more heat in the body, excessive sex feelings, hyper sensitivity of the penis glands, thin semen, general nerves weakness, excessive masturbation, excessive Porn watching, and High cholesterol. High blood pressure, Diabetes, Obesity, thyroid, heart problem, alcohol, Tobacco use, Sleep disorders, tension, stress etc. 

This problem of premature ejaculation is very much treatable. 

I am suggesting you some ayurvedic medicines. 

Take shatavaradi churan half teaspoon in the morning and one in the night, 

Take tablet manmath Ras one in the morning and one in the night. 

Take tablet Pushp dhanva Ras one in the morning and one in the night, and take tablet Sidh makardhwaj Vati with gold, one in the morning and one in the night after food. 

All three preferably with hot milk or with water. 

Avoid junk food, oily, more spicy food, alcohol, tobacco, tension and anxiety. 

Start doing yoga. Pranayam, meditation, Vajroli mudra, Ashwini mudra, kegel exercise for at least 1 hour a day. 

Start taking hot milk twice a day also 2 to 3 dates in the morning and in the night with the milk. 

DO all this for 3 months and see the results. 

If you don't get satisfactory results then please go to your family doctor or to a good sexologist. 

 

There are too many reasons for PE or even without reason also . But the counselling do the Major help for premature ejaculation ,means without medicine. Start Stop techniques, squeezing techniques during sex , kegel exercise 20 count at a time 3-4 Times a day, helps to improve PE.