Probably best to talk to your GP or CHN to find out for certain if it is reflux or not.

I know that Jacob was a 'happy chucker' - he vomited a lot (and I mean A LOT) but it didn't ever upset him, and it rectified itself when he was around 6 months of age. So far, Ruby (3w old today) is the same - very vomitey, but so far unfussed by it.....