I'm scared I might miscarry

I'm 6weeks 4 days pregnant finally saw my baby and babies heart beat yesterday. Though today me and my fiance had the biggest argument ever it was verbal nothing physical, but I was raising my voice and crying I ended up going to our room laying down an also walking around the room doing breathing exercises calming myself down. I'm scared that I might have affected my baby and maybe might miscarry though I haven't had any cramps or bleeding. Can someone give me some advice please.