Thank you for your query, I am really unfortunate to know that you have been suffering from premature ejaculation. Do not get anxious. Presently Premature ejaculation becomes a common problem in all kind of people according to various life style changes and some other factors. In your case you believe that it is due to high protein intake. At first I am telling you that premature ejaculation is apsychological condition than physical. Your indications of premature ejaculation may not be concerned with your protein intake. Commonly premature ejaculation occurs due to stress or pressure to perform.I would like to advicethat you should wait and watch and also it may be helpful to discuss it with your partner and talk freely about your worries. I would like to advise that you may consult your family doctor or an urologist for a detailed check up, if these measures do not help. They can detect if there is some underlying pathological condition affecting premature ejaculation and also can suggest remedies in the form of medicines or some other method. I do hope I have been appeased your query well and I hope you become better soon. Wish you all the best.