Sexology Treatment

I understand your concern. If the size is causing discomfort for your wife, it is important for both of you to discuss this openly and consult a urologist for further advice. They can provide guidance and possible solutions. It is always best to visit a specialist to address such issues properly.

Nightfall is normal. Your body's dropping off some semen while you're asleep, that’s all. It could be activated by stress, sleeping in a weird position, or thinking sex-related thoughts before bed. Try not to get too excited before sleeping and practice good sleep hygiene – it might help stop things going bump in the night. If this doesn’t work after a while (like more than say three months), then maybe see a sexologist about it.

To improve your chances of getting your wife pregnant, you should address both the penis problem and asthenozoospermia. Stress, fear or health issues such as heart disease may cause the penis to malfunction. Asthenozoospermia is when a male’s sperm are not moving well. One might need advice that is tailored to them from a professional on what to do which could involve; talking therapy to reduce anxiety levels, drugs that can help one get an erection, or changing how they live intending to improve their sperm health among others. A sexologist should be consulted for more information on this subject.

It sounds like your friend might be facing some issues with sperm production and fertility. He should see a urologist, who specializes in male reproductive health. They can provide a thorough evaluation and guide on how long to wait between ejaculations for optimal sperm count. For concerns about pregnancy, a visit to a fertility specialist may also be helpful.

It is not advisable to take medicine to stop sex drive without consulting a doctor. Certain medications can lower sex drive, but they should only be taken under medical supervision. Please visit a urologist or endocrinologist for proper advice and treatment options. 

Masturbation does not affect your ability to have children in the future. If you're worried about fertility issues, you can talk to a doctor or a fertility specialist for reassurance. Remember, many factors can affect fertility, so it's important not to jump to conclusions.