All 3 of my babies had acid reflux, and I can say from experience it is very hard, but it does get better. First, not every baby who spits up have problem reflux and needs medication, but it sounds to me as if your baby does need to be treated. In my experience, reflux needs to be treated if the child is in obvious pain, is not gaining weight, OR has respiratory issues/ear infections from the reflux. Some babies with fairly serious reflux will gain weight because they do what's called comfort feeding - the milk/formula feels good going down because it cools the burn, so they actually will eat pretty frequently (but sometimes only small amounts). I mention this since some docs think they only need to treat if weight gain is an issue, but the acid can still do damage so that should not be the only indicator.
I can go on forever on this subject, but a few suggestions:
-Be a strong advocate for your child. If the axid is not helping, ask for a dose adjustment and/or a change to another med (prevacid worked wonders for us). With the right meds and doses, most cases of reflux can be fairly well controlled.
-Try to get an appointment with a pediatric GI doc. You will probably have to wait several weeks to get in, but they are much better at managing the reflux than most peds since they are so much more familiar with it.
-Keep baby upright as much as possible. As others mentioned, unconventional sleeping positions may be necessary for a while. Mine napped on my chest for about 6 months and slept at night in the carseat carrier or bouncy chair (strapped in and I felt it was safer with them on the firm floor next to my bed. This will not mean they never sleep on their own. Once mine had the reflux better controlled we were able to transition to the crib.
-Don't believe everything people (even docs) tell you. I was told most babies outgrew reflux my 6 months, but mine all needed to be on prevacid until 2-2.5 years. When I actually started connecting with other reflux parents I found this was not that uncommon.
-If possible monitor how different foods you eat affect the reflux. We used formula, but I know certain things can cause problems. (And once you start solids, go very slowly to see if any cause flare ups).
Hang in there and know it will get better. I'm happy to offer more advice if needed, but hopefully this is at least a start. Good luck!