Head pressure dizziness sometimes vision.changes somerimes headache nd sharp pains could something be seriously wrong with me? anxiety tmj allergies

Many possibilities: Yes , you may have tmd , migraine, muscle contraction headache etc. You need to consult your doctor who may refer you to a neurologist.

Important to see MD: any severe headache deserves attention and ruling out most rare but serious conditions. Once shown to be not life-threatening, as most are not, then muscular caused can be dealt with. The majority of headaches are of muscular origin.

See MD ASAP: Some significant symptoms. I'd recommend seeing your MD TODAY.