Hello, Sinse The Beginning Of July I've Been Experiencing A

Hello, sinse the beginning of July I've been experiencing a lot of unusual and traumatic things in my body. I had an awful panic attack out of the blue while relaxed in my home that lasted about 20 minutes where I lost all control of my arms and legs and couldn't feel my face and had a soaring temperature. This is was the first panic attack I've had sinse a vague memory of one in my early childhood. After that I was fine for a week or so until after a party I went to where the day after I felt jabbing pains in my chest which prompted another 30 minute panic attack. For the entire week afterwards I had many milder panic attacks every day, one of the days I was in a point of panic for the whole day to the point I had to pull my partner out of work and stay with their parents so I had people with me. I've been to my GP and I had an ECG and blood tests testing my thyroid and liver and kidneys and for diabetes and all was fine? That settled me a bit although through all of this I became increasingly aware of a pressure/tightening pain in the back of my head that happened whenever I was trying to focus or talk in depth about something. This recurring pain in the same location became a worry to me so I began to overthink all it could possibly be. This pain I noticed roughly 3 weeks ago now but it's became a huge concern because as of 7 days ago I have been feeling weightlessless, all over head aches or light headedness, dizziness, feelings of my hands and feet feeling further away than they should, senses like touch feeling a little off and sometimes hearing feeling further away than it should, and even during the night I will wake up and then immediately I feel weightless in bed and have feelings of worry and panic so I cannot sleep. I've been to a doctor at a walk in centre who did some motion tests and checked for my brain pressure through my ears and the back of my eyes, as well as checking my blood pressure and they say there is nothing apparently sinister going on from what they can tell, but they can't explain the dizziness. This is all really stressing me out because I have never felt these feelings before and I'm exhausted and constantly scared and anxious over my health. Help?