<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi sir . i am ashish.i am suffering from sex problem. when i start sex my my penis get erected but when i start to intercourse it could not erect properly.i do masturbation by hand , right from my childhood...16 yrs till today 24 yrs. i AM TAKING TREATMENT FOR T.B.TUBERCULOSIS.THIS IS MY FIRST TIME OF SEX.  <response>: Hi Ashish;welcome to Chat Doctor It is not a problem ;it is a first time hesitation. You are suffering from mental stress regarding the consequences of having sex first time with thoughts ;whether somebody is seeing us ;will I be able to do it satisfy my partner ?what if she gets pregnant your mind will be crowded by such thoughts. If it is by mutual consent no need to worry it is not a problem. Relax.thanks 