Thanks again, everyone. I will definitely look into support groups and the lactation consultant. I did take a class before DS was born, but another one couldn't hurt since that was 3 years ago!
We used Dr. Browns with DS -- he had issues with reflux, gas, etc etc that I never really knew if the bottle was contributing to the problem or not. I think it was not, but it couldn't hurt to try a few different kinds when I do pump.