My son was an acid reflux baby... I knew that he was extremely uncomfortable, and I wanted to do anything to make him feel better. He was darn near 3 months before we got a smile from him... he was not a happy camper :( We used Zantac and he did well on that, though as he grew the dose needed to be adjusted.
My little guy would cry during feedings... he would stop and pull away, arch his back and scream. He could not lay flat for a good 6 months. hiccups all the time, spitting up, though not a lot, just frequent. he would also sputter during feedings, almost like the flow was too fast and it was choking him.
Try the meds... and put all the reflux tips to work for you (lying on a wedge, keeping upright after meals, etc).
We also started a few tsp. of cereal at around 6 weeks... I know, it's early, but we it wasn't to replace any formula, it was for the sheer fact that the weight of the cereal helped him keep things down and wouldn't allow the acid to splash back up into his esophagus. This was doctor recommended.
Don't fret, our boy outgrew his condition, though we are not able to introduce acidic foods for a while (orange, tomato, etc). he's 1 1/2 now and hasn't shown any issues since around 7-9 months and went off the meds.
p.s. - my son also needed to eat more often and took less at each meal. This may mean your baby will be attached to the breast a lot more than a baby without reflux. they simply cannot handle big meals. So be aware of that too...
Good luck J. - may god bless you with the patience of a saint... you're gonna need it :)