Angelman syndrome.. does my son have it?

Y’all I have completely freaked myself out. I have just learned of Angelman Syndrome. My son is 8 months old and shows signs of it. He doesn’t roll, crawl, babble. He can sit unassisted and knows how to play, grasp things. He also can just be sitting by himself and make a little chuckle. I’m terrified my son could have this. I’m probably just overthinking it. I’ll bring up the delays to his doctor but thats in a month. What do you all think?