Hello. I have been through your question and understand your concern. Your symptoms seem to be related to orthostatic hypotension, which is a benign condition, caused by venous insufficiency. Uncontrolled diabetes can cause this by affecting vasa vasorum which are the vessels which supply the big vessels. Arteries and veins beside carrying blood, are also structures which need to be supplied by blood in order to stay healthy, which are carried out by this tiny vessels called vasa vasorum. Diabetes affects this tiny vessels causing sometimes orthostatic hypotension. So I recommend a endocrinological consult to check your glucose blood level and the glycated hemoglobine level. Hope this helps, please feel free using MHC for further questions