Has anybellie had a ultrasound at 22 weeks and your baby has a little bit of fluid or a shadow behind the heart is it…

Has anybellie had a ultrasound at 22 weeks and your baby has a little bit of fluid or a shadow behind the heart is it something to worry about well of course I'm worried....also I called my Dr and she told me that they just wanna take a closer look (he doesn't have down syndrome) so me the monkey that I am had to scare myself and look in Google and I just broke down because it was talking about heart failure ugh I pray to God that my baby boy is okay and strong...