Baby girl has a cyst

Sara
I'm 33 weeks right now and last week during the ultrasound they found a cyst on her right ovary, I went back today to have hem check and see if it went away and it's just gotten bigger. They are telling me not to worry but I'm seeing my high risk doctor tomorrow to see what they want to do about it. 
I'm one stressed momma. All I want to do is cry and Google things but I know that's only going to make my nerves worse.