Mommy, I have a question: my son is always making noises like a bear w…

Mommy, I have a question: my son is always making noises like a bear while sleeping, wheezing and scratching. He even makes these sounds awake. I understand it's gas. But I notice the noise after he burps. It's impossible to sleep at night. Every time I go to him, he sleeps. And that's all during his sleep. I worry... and I keep getting up to check on him. Has anyone experienced this? ???