Should i be concerned if lately i have had a difference of 50 between my systolic and dystolic blood pressure?

Depends --: It would depend on your age, fluid status, meds, and on the actual numbers if they are accurate -- and know that most home or ambulatory BP machine (automated or manual) gives more accurate systolic measurements and less accurate diastolic measurements -.

No: Do you have hypertension? If you do: take your medicines If you don't: do not measure your BP unless you feel symptoms and then discuss it with your doctor