###Human: My penis shrinks before I penetrate. What to do? ###Assistant: Hi. You have a problem with erection. It occurs due to the stress of having a baby. Regarding masturbation and a decrease in motility of sperm and their count, there is no absolute relationship between these two things. Masturbation is a healthy and safe practice. It is better to assess the level of stress in you. Treat the cause responsible for it, and the problem will get better soon. Taking medicine under the guidance of a doctor will not become an addiction. Your doctor decides the medication, the duration of taking it and stopping it.