So I'm lost on what I have, I have a tilt table test scheduled and do believe I have very mild POTS but I really wonder about this tachycardia after eating..... Its only when I stand after eating and usually stays up for 5 hours and starts 30 mins to an hour after I eat, a doctor I spoke to about this said this sounds like dumping symdrome and that POTS doesn't do this. He said if anything your heart rate drops with POTS when eating and raises when changing positions, when I read the symptoms of dumping symdrome it's exactly everything I have to a T!!!! But one problem, I haven't had any surgery on my stomach but that's exactly What I have!!!! I am lost. May bring this up to my doctor.