What’s Going On With My Health?

Started the year off with a horribly traumatic loss. Started having severe acid reflux as a result, then near daily panic attacks, now started getting headaches frequently, mostly tension headaches. When the headaches started I was getting light headed really badly. CT scan at the ER said everything was clear, all that the other tests found was that I was slightly dehydrated. Still getting headaches and I don't know why. Stress hasn't gone away, maybe that's it? Seems like I'm just having problems pile on top of me this year when I usually have nothing wrong with my health. In the back of my mind I'm like "what if the CT scan gave me brain cancer?". Idk man this shit is just annoying. Are these symptoms normal from prolonged stress? Not trying to go crazy reassurance seeking, usually I'm fine but I'm just getting irritated at my life now and I wanted to see if anyone else had similar experiences