are you in miami?
http://www.mamasource.com/business/14059862321568677889
anyway: get to a ped GI now. screaming is NOT normal & you just said she has reflux, so it's not colic.
her axid dose may not be high enough.
you most certainly can try 'alternative' methods like a chiropractor and craneal sacral massage, but ME, I believe in Western Medicine along with alternative therapies. see link above...
go to the pharmacist w/ a big smile and ask her/him to please humour you by looking up the pediatric axid dose on her/his 'ipharmacist.' this is the electronic device they use to check dosing. Axid is VERY weight sensitive & I BET her dose can be increased...
are her stool normal? if they're hard like pebbles or watery (sometimes a watery diaper is ok, but not frequently)then it might be her formula. TELL the ped you want the diaper tested for what's called 'occult' blood (this is blood that you cannot see w/ your eye), just in case. anyway if she's straining to poop, grunts and has foul-smelling gas- this all can be signs it's her 'diet.' then you'd switch to alimentum or nutrimigen and give the new formula a good 2 weeks. each change you make you must give 2 weeks for it to really get into the body's system.
get to a ped Gi