I'm thinking my baby has reflux. every time I feed her, burp her, hold her upright for 30minutes than lay her down she…

I'm thinking my baby has reflux. every time I feed her, burp her, hold her upright for 30minutes than lay her down she spits up every time. so I tried last night letting her sleep in her car seat and she slept with no spit up. my new born can already lift her head really, really well. is this okay? I'm out of ideas and she's finally keeping down her food and sleeping two hours at a time. #firstimemom