Shivering feeling inside. This problem.

I work out regularly non smoker and non boozer, below are the latest blood reports of mine which are recently taken HBA1C 5.4 Fasting blood sugar: 108 Blood pressure: 114/78 Total cholesterol 156 Triglycerides 154 Serum HDL cholesterol 37.8 Serum LDL cholesterol 103 Serum VLDL cholesterol 30.8 Total CHOL/ HDL cholesterol ratio 4.12 LDL/HDL cholesterol ratio ( method calculated)2.73 HDL/ LDL cholesterol ratio 0.37 Non HDL cholesterol 117 Total Serum bilirubin 1.10 Serum bilirubin direct 0.21 Serum bilirubin indirect 0.81 Serum Iron 138.7 U1BC 140.10 Hemoglobin 15.5 Thyroid T3 Total 0.84 T4   4.40 Thyroid stimulating harmone 2.19 It's been three weeks i am feeling shivering feeling inside which lasts for few minutes, not particularly at the same time...no visible shivering externally but shivering like as if I am in cool climate, Kindly please help me identify to get rid of this problem. Thanks in advance