Hello. Very Good evening. As per your history given, I will advice you to go for a preventive Health check up including Thyroid Function test along with 25, hydroxy vitamin.D. As far as your breathing difficulty is concerned,  please do a ECG test for your self along with chest x ray. Please try to understand that these investigations will reveal any masked disease in your Body. Because behind every symptoms, there is surely a Disorder going into your Body,  say Metabolic Disorder for instance. After the reports, come to practo chat for your evaluation, counseling and treatment part. Regards. Bye.