D.M.
K.,
Our 19 month old son has GERD and asthma. We were told by his pulmonologist that the two go hand in hand. You should totally mention it to his pediatrician, however, it wasn't until I independently took him to a pulmonologist that it was diagnosed.
I, also, have not heard of a speech delay for GERD patients. In fact, our son has been evaluated by a speech therapist (for another issue) and we were told he is speaking way above his age. Not to worry if she is making sounds b/c it sounds like that is right on track!
Hope this helps!