What is the reason for weakness for diabetic and hypertension patients

I since last thm 72 year oild men previsiously my bp will be high and muy family doct as advise tab texloc 20 once in day .my blood sugar was little heigh he recomen tab GLYMETGP 1MG DAIL 1-1 (MORNIMNG AND EVENING BEFOR LUNCH AND DINNER) NOW MY SUGAR IS IN COTROLLED PLUS I AM TAKING DAIL ECOSPRI75 MG DAIL -1, ATCHOL-F - 1 TAB DAILYFOR CORSTROL, SURBEXXT TB 1 DAILY. EVERY THING IS OK I WORK IN MY OFFICE FOR APPROXIMATEL 10 HRS SINCE LAST 3 THREE DAY I OBSERVED THAT SOME WEEKNESS I FEEL AND I MEASURE MY PRESSUR ALSO THAT COME AVERAGE 110-117 AND LOWER - 60-70.I FEEL ALSO LITTLE IN MOOD FOR REST I WHAT KNOW WHAT WILL BE REASON OR YOU SUGGEST ANY TASTE ALSO