Firstly reflux sucks big time so sending you

's
My DD was on omeprazole (losec) from about 6 weeks to approx 4 months and when we first started on it I noticed results within 2 - 3 days maximum. I had tried gaviscon before this but had no joy with it and it was so hard to administer especially when BF that I did not continue using it, plus the losec worked so well we did not need it. I tried a couple of time to stop the meds with disasterous results but when I tried again at 4 months we had no problems and have not used them since. There a lots of other things that help to, a dummy is a life saver for reflux babies, raising the end of the cot or bassinet (DD's is still raised) keeping them upright for as long as poss after feeds and not feeding too often if possible.
There is a really good website you may have already seen but here is the link in case you haven't
Reflux Website
Hope it all comes right sometime soon, and the screaming does not do your head in. I had bad reflux in pregnancy and it was hideous so always thought of this when DD was screaming, poor wee babies.