Wisdom tooth or crown?? Advice needed!!

I had a crown fitted at the end of November last year. I became quite unwell shortly after it was fitted…pins and needles in the opposite side of my face and a numb arm out of no where, followed by blurred vision, it went onto drop attacks, pressure headaches and shortness of breath which im still struggling with now. Had MRI on head and neck which came back all clear. im still having shortness of breath, along with soreness down the side of my neck and a feeling like something is stuck in my throat at the base of my neck and constant white foam in my throat and a stinging sensation all down the inside of my neck. have also got chronic fatigue too.
however on that side where i am feeling the discomfort my wisdom tooth has had an infection in it, despite the infection being cleared up with 2 lots of antibiotics i am still getting pain and inflammation around that tooth. so could anyone please give me any information or advice on what this could possibly be?? have seen a gp and my usual dentist countless times but im getting to the point where im desperate for a resolve, im in so much pain.