stomach pains and diahrea(sp?)

So last night after i had eaten a late lunch i started to get this cramping/'full" feeling in my stomach. I have recently sort of had problems with this in the past 7 months or so after recently giving birth to my first child. They told me i had acid reflux i would get this stuffed feeling that would become a cramp and a whole bunch of my muscles would cramp up and I would barely be able to move around. I thought I was dying the first 2 times this had happened to me and i went to the emergency room because these 'episodes' would lasyt for hours soemtimes overnight and i would be able to get no sleep, imagine how difficult this is to deal with shortly after having your first child. So i guess my first question is has anone else had this experience with acid reflux because everyone iknow who has it has more of a heart burn experience and its not like that to me its like severely painful cramping. The other thing is that last night after i had eaten lunch i got this intense full feeling and it was almost making me nausieous and then i woke up early morning with severe cramping in my stomach and then i had really bad diahrea it was mostly water and pretty constant throughout the day it has subdued a little (the diahrea) but i still have this nausiating fullness feeling. and im wondering if i should go to the doctors