Hi, first you and your girlfriend understand that it's not always possible to have intercourse more than once or twice successively within a short period of time. ... just as you cant take 2 or 3 full meals from lunch time to dinner time. Your body is designed by nature such that you will not be ready for another intercourse within a certain time period from the first one. That period may be a few minutes at the age of 16-17 and can be a few hours to a couple days at your age, to 2-15 days for the elderly. Similarly as you get used to each other sexually in a relationship it starts taking longer between two intercourse episodes. This is in addition to the age effect. So if you cannot get strong erections in successive coital episodes in a short span of time, its not your fault.

For Erectile Dysfunction: Have good sleep, do exercise & yoga daily for 1 hour. Take hot milk 1 glass morning & evening. Avoid spicy. Chilli.nd fried food Take CP SHILAJIT tb. Manmath ras. Nd tb. Sidh makardhwaj bati. One each morning & evening for 3 months. Wd hot milk. See d results or otherwise consult a sexologist personally.