I'm 31, white male, 145lbs, 5'10" - this has happened a few other times this year - but today I scarfed down a decent amount of some supposedly MSG-free Orange Beef with brown rice, and about twenty minutes later I stood up and could feel my heart pounding in my head, so I took my pulse and it was up to 120bpm's. I got my pulse to go down fairly quickly (2 or 3 minutes), but then stood up about ten minutes later and my heart started racing once again. I sat down on my bed and shortly after I fell asleep for about twenty minutes. When I woke up I had a BM (already had one earlier today), wasn't diarrhea but it wasn't solid either and it was a good amount (not sure if it matters, but I've been trying to eat more fiber lately as well). I should also note I've suffered from panic attacks/anxiety/depression this year, but honestly have been feeling like I'm beating all of that as of late (haven't had a panic attack in months and feel more optimistic now than ever). Also have had some bouts of indigestion throughout the year, was burping a lot for awhile, but all of that seemed to go away as of late (I've been trying hard to eat better when I can). I recently had blood work done and everything was perfectly fine. I also drink lots of water regularly. Just wondered if any of this is cause for alarm or if this is normal? And if it is normal, what exactly happened to me? Was my body just not agreeing with what I ate?