B.Z.
Hi Jeanmarie...
You may want to ask the dr. about switching your baby over to Similac Alimentum. It's a hypoallergenic formula ... it's for food allergies and colic due to protein sensitivity. The switched my triplets from the reg. Similac to this when 2 of the 3 were dealing with reflux, discomfort following feeding, etc, early on (but no vommitting, though). My nephew did experience the vommitting like your baby and they put him on the Alimentum or Nutramigen-- I think they are both the same-- just 1 is by Similac & 1 is by Enfamil. They are both pricey, but worth it if it makes them comfortable. :) There are a couple of other Similac kinds, as well, that may work out better for your baby. Check out this link-- it will tell you about each of the different varieties--> http://welcomeaddition.com/productinfo.aspx
I also use the Dr. Brown bottles, too, and they seem to help with the gas and digestion. Also-- when my babies were in the NICU, they recommended that you lay your baby on their belly at least 1 time a day for a pd. of time (i.e. during an attended nap) because this helps to aid in digestion.
Good luck and take care!