Let me at the outset tell you that your chest pain in not likely due to pulmonary embolism / blood clot in lungs. A lung embolism will usually have a history of calf pain, swelling, tenderness and redness. The chest pain and shoulder pain need to be evaluated for pinched nerves in neck by MRI. Myofascial pain syndrome is the other likely possibility. You may get an EKG and D-dimer test so heart and lung serious issues are ruled out. This will help out in resolving your anxiety. Anxiety is one of the common cause of dizziness. Internal ear issues are the other common cause for it.
The causes of dizziness according to the decreasing incidence are;
1) Benign paroxysmal positional vertigo (BPPV) 20%
2) Vestibular 15%
3) Migraine and motion sensitivity 15%
4) Anxiety and depression 10%
5) Meniere's disease 7%
6) Cerebellar disease 6%
7) Transient ischemic attacks 5%
8) Orthostatic hypotension 4%
Please feel free for your follow up questions.
I would be happy to assist you further, if you need any more information.
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