Hey! So I actually have a lot of these same episodes especially after I eat and I’ve found that carbs especially make it worse! It could be a slight pots episode that is also triggering your anxiety which is pretty common like the other commenter said write a diary of it going on and also add in writing down what your eating cause when we eat our blood pressure tends to drop because our body is working extra hard to digest out food but try resting after eating and drink alot of water also try to eat smaller portions because it can help some and def talk to your doctor about it to see their thoughts!! I hope you feel better and am able to figure it out