Hello and welcome to HCM.
Thank you for your query.
I have gone through your query with diligence. And all three of your problems are related to one cause. And this is called 'performance anxiety'. In virgin male adults, who are informed about due sexual intercourse, anxiety settles in which results in poorperformance. Sexual intercourse should be enjoyed both mentally and physically. Do not worry about your performance, do not worry about what is going to happen. Just concentrate on what you are doing, and try to prolong your session.
Start with prolonging the time for foreplay. Work on satisfying your wife more with foreplay, this will relieve the anxiety from your mind, and also, even if the actual penetrative session is short, your wife will be quite satisfied with the foreplay. Sexual intercourse gets better with time and experience, so you cannot really control it initially.
The most common cause of
premature ejaculation and
erectile dysfunction is performance anxiety. This is seen in at least 80% of the cases. If you still do not succeed, you should consult a doctor.
In the meantime, do not masturbate, which can lead to a poor erection or a flaccid one when you are in contact with your wife.
I would also like to state that
masturbation is very healthy, and although you have been practicing the act of masturbation for 15 years, it cannot be the cause for your problems.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.
Best wishes.