It's a hard one to diagnose sometimes. My DS had reflux for a little while, he didn't chuck a lot so I guess it was more silent reflux. It was obvious though because he would wake up in the middle of the night screaming in pain and when I lay him down to feed he would scream too.

I ended up taking him to a paediatric chiropractor and after one session and following his advice the reflux disappeared within a few days. Paediatric chiros are great for unsettled babies in general so it may be worth considering?

Also, like Lulu said try something like Brauer Colic Relief and even try raising the top of your bub's mattress so that it is slightly inclined. I raised DS's mattress up with a couple of rolled up towels.

Hope you both get some relief soon