Thanks for your query.Your sperm analysis is well within normal limits except the count which is little lower than it should be The total sperm count
depends upon the timing of collection of semen as regards the interval between the last ejaculation and collection of semen.Normaly there should be interval of 4 days.bet these two ejaculations.
As regards your query about size of the penis It is not the size but the hardness of penis on erection that is important for sexual satisfaction of a woman.There is no medicine that can increase the size of a penis.
About your doubt erection problem Please note that masturbation
has no negative effect on sexual life in future.So remove this myth from your mind Hope I have addressed all your queries.