I have this too and after the first couple times of it happening, I know exactly how my body feels when it's coming on.  When I start to feel that shaky feeling, the only thing to stop it is to EAT.  Trust me..eat some carbs when you feel this coming on and it'll subside.  Even if you just ate, eat again.  Then don't eat what you ate to cause it anymore or it'll keep happening.  It's definitely hypoglycemia but I'm not sure if it's a part of the dumping syndrome or not since I haven't really had dumping (3 yrs out now).  The only thing I do know is, eating will stop it..dont ride it out.  Having blood sugar 40 or lower could cause a seizure or worse.  Eating will raise your blood sugar and stop the decline.

Go to a doctor

Hi Carol May here, been a member for 12 years, haven't been on in a while! I had RNY Gastric Bypass in 2002, lost most of my weight and kept it off for about 4 years, then started to gain a little at at time until I gained up to 174 pounds!! Then in 2010 I was chosen for a new procedure at Magee Women's Hospital called Stomaphyx (spelling?) the surgery worked and within 8 mo I again lost most of the weight I had gained but it was short lived, I soon gained all the weight back to around 174-178! Blood work is all good and no major problems other than joint pain on occasion( getting old Suddenly in August of 2012 I started loosing weight didn't notice at first until my clothing started getting loose, I started weighing everyday, I had a 10-12 pound weight loss each month and now today I'm down to 129 pounds!! I didn't notice at first but I'm having some issues, I'll be very hungry but after only a small amount of food I'm so full and I stay that way for about 4-5 hours I eat very little!! Somedays I can eat more but most days I eat very little!!! I've have a ton of blood work, MRCP of the stomach,EDG,Colonopsy,-with biopsy,Chest EXRay, Ultrasound of my Ovary's,mamagram,Pap test, All tests are normal! Why am I loosing so much weight! I have no other symptoms and I feel good! Sorry this is so long any advise would be great Email Carol at tckmay@gmail.com

Thanks
Carol May

Could be appendicitis.   When I had mine it was a dull ache that felt like gas,    When the pain increased and nausea kicked in I went to the ER.

Thank you for responding! I felt a little better the next day and my surgeon was out of office so I decided to wait on calling. Each day it has gotten better and it only hurts now if I move a certain way. Not sure what it was but glad it's better instead of worse!