Mommy's babies cry before they pee. Sometimes it just hiccups, but more…

Mommy's babies cry before they pee. Sometimes it just hiccups, but more often cries, sometimes really cries to pee. How can I help my little one, what should I do? The doctor said phimosis, don't need to do anything. I feel bad for my son when he suffers so much before peeing. Help me with advice.