Feeling Devastated..

Hello Ladies,
I'm currently 37 weeks and 2 days. I had an ultrasound on Tuesday and was told today that they found something cyst like, one in my baby's tummy & brain. Doctor said they're really tiny, but wants me to do a follow up ultrasound with the hospital. I've been super heathy throughout my entire pregnancy and to get news like this only worries me. Has this ever happened to anyone? What was the outcome?