It's about 2 month back when suddenly my heart beat increased and I started breathing at rapid speed I had checkup then but everything us ok but my acid in body us more shown by reports. At that time my there is dizziness in my head. it was like panic attack I have beginning 2 feel anxiety. And now now anxiety is decreased but there is some pressure in my head still, I sometime becomes ok then again happen. When I eat after that I feel like something is struck from neck to down the chest. What is that is this pressure in head is due to anxiety or brain tumor. Although I was ok I am fully conscious ,no balancing problem or vision ,no sleeping problem everything is ok but feeling like pressure in head. Is its anxiety or brain tumor? Please help I am little worried.