Ultrasound scare- 22 Weeks

So I have had 2 US in the last 2 months. The first one showed that baby had 2 small cysts in the brain and white spot in the stomach. They told me not to worry and that usually the cysts go away by the time I am 28-32 Weeks. Went back for a check up and one of the cysts was gone, so that made me feel better. But they seem still concerned with the stomach. My OBGYN is now referring me to a perinatologist. I have done some internet reading & it says that it could be nothing, it could be a calcification that will go away, it could be a cursor for DS or cursor for CF. Any other moms out there experience this? Needing some advice or reassurance because none of my other mom friends have had any of this happen so I’m trying not to worry but I can’t help it.