Hello, Welcome to Health Care Magic. I understand your concern. There are some psychological reasons to think so, because you are comparing your performance with medicine and now without medicines. Look, before the medicines also you were fine and again without medicines you will be fine. Your wife must not have complain anything, rather it is your inner self which is troubling you. I must take this opportunity to little educate you about physiology of sexual functions. Please read these lines carefully and try to understand it. Erection of penis has many factors. Psychic stimulation due to erotic material or thought activates certain nerve cells in brain, these nerve cells send signal to spinal cord and ultimately reach at penis. Penis has erectile tissue which acts on getting signal from brain. The erectile tissue of penis has two types of nerve supply: - somatic and autonomic nerves. The somatic nerves are of two types: - Sensory (necessary for sensation like touch, pain, temperature etc) and Motor (necessary for muscle contraction). The autonomic nerves are also of two kinds: - parasympathetic nerves and sympathetic nerves. The parasympathetic stimulation results in the formation of the erection, while the sympathetic stimulation is involved in ejaculation. You appear to be more anxious about your future sexual performance that may be causing poor erection. Anxiety increases sympathetic tone in body and causes difficulty in initiating and sustaining erection. Just relax. Wait for some days, eat healthy nutritious diet, do regular exercise, maintain good hydration, have enough rest and sound sleep. You may also take a multivitamin tablet Tetrafol Plus which has been found helpful in promoting erection naturally. I wish you all the best.