I Am Constantly Drained My Energy Levels Are Very Low

I am constantly drained my energy levels are very low & I feel tired fatigue during mornings and during the day only towards lay evening feel about better.
I am 44 years old female with diabetes
Thyroid, high blood pressure & I take simvastine for cholesterol.
I go to work and lately I am having to work from home due to fatigue.
Can you help
I prefumusly sweat after doing house work
Vacuuming etc..