 [ Symptoms ] i am unable to achieve and substain an erection during sex what are the main causes and solutions less masterbation  i am in my later 20 is and have yet to have sex in my life with a condom on and am forced to have sex without one which usually is not a problem for me does masterbation really effect your erections and sex drive during sex [ Disease ] masturbation is not harmful and will not affect your ability to achieve or maintain an erection during sex if you are having these issues associate with sexual activity    your first sexual activity    this could just be stage fright or performance anxiety while there can be organic reason why a person could not achieve an erection the fact that you are not having a problem with masturbation proves that the blood supply to your penis is adequate the nerves are working and all systems are go if and when you find a caring partner try to relax and allow nature to take its course when it comes to sexual activity if you are still having problems you may need to see a counselor to help you through this anxiety provoking event many fears run through a man is mind when first having sex will i be able to perform will i please my partner will something happen that will embarrass me will i get an std many things let sex happen do not be anyone but yourself