Hi and welcome to HCM. Thank you for your query.
This can be GERD
but also postprandial hypotension
and other digestion disorders.AFter meal there are hormonal
and methabolic changes which can cause your symptoms. You should eat more frequent but smalle meals and avoid food that trigger your symptoms such as alcohol, fats and high-sugar food. Eat more fruit and vegetables. I WIsh you good health.