Spinoff to newborn with reflux question???

How did you know your baby had reflux? My DD just started making grunting noises while sleeping on her back and then spitting up after them. She also recently stopped liking to sleep on her back. She could be sound asleep when we hold her, but as soon as we put her down she starts the grunting noises....could this be reflux??
I have a dr. appt next week but was just curious. Thanks!

Re: Spinoff to newborn with reflux question???

Dd had those symptoms. She also cried all the time, especially when eating.