I'm experiencing a psychic attack right now - Paralysis and feeling like my skull is being crushed and that my mind is on fire near the frontal lobes of my brain. I am also considering that the witch responsible has a spirit or demon under its control and is using it to attack me as I have been hearing unexplained noises and lights flickering only when I'm alone and vulnerable, as in out of my room where my protective sigils, runes and symbols are drawn on the wall above my bed and on paper in two small velvet bags, one in my pillow and one in my bag.
Also i was in almost complete darkness, my laptop screen being the only light, and the only way i managed to break the paralysis was by reaching with the only limb left i could move, my right arm, to the tv remote and switching it on so i could see and managed to break out of the mental cage and turned on a lot of lights...
If you're feeling intense pain and experiencing paralysis than you really need to see a doctor, because that sounds very serious. Protective magic alone isn't going to get rid of those ailments (although it helps). Get some medical treatment, wait until you start feeling better and if weird things are still happening, perform an exorcism or cast a banishment spell or unhexing spell.
Draw a ton more symbols, stay connected to the internet, and try to figure out who is attacking you. Im new here, I dont know more than a few spells, but try physical treatments, herbs, that jazz, and cold medicine (it is responsible for relief in headaches and such) and draw symbols of protection in every room, try vanishing and warding spells, sage, I mean this is serious and Im probably the wrong one to answer, but if you learn who is attacking you and ward them off, you should be fine
Before you assume a magical attack, you first need to rule out all mundane possibilities. From what you are describing, you need to seek medical help. This is going to be your best solution. You can augment that with spiritual practices, but trying to place it entirely on a spiritual or magical cause is not a good solution.