Its normal or Something serious? Help?

Hello Dr. From last few days I feel continue numbness in left cheek .pain in left arm. Shortness of breath & dizziness. Excess sweating. Irregular heart rate. Indigestion & Acidity. With pain in jaw, left shoulder & upper middle back including back neck & pain behind eyes. Sometime I also feel flashes,headache. I took all test like ecg .echo cardio & lipid profile. All test came normal. Then I took b12 & d3 test which is very low. (b12-134pg/ml .d3- 9.03 ng/ml) so Dr. Give me med. Related to vitamin deficiency. Dr. Also did cotton test on my face. I can feel cotton but little less in compression to right face.he said nothing to worry.but I am thinking that I am facing some life threatening disease.& spending too much time on google. Sometime I also feel tingling & Shaking in my whole body including scalp. Mostly in left side. & there is a mild swelling in my left face compression to another. Is I am facing any life threatening disease ..Please help??