Low blood pressure? any advice?

I went to the doctor and the nurse said your blood pressure is 80/50. I have felt weak for the last few weeks. But no one seems alarmed about it? Any nurses can tell me about what they take is on low blood pressure. I have added salt to my food, started to eat spinach and drink oj, seems to be worse on exertion. Blood work is pending, ferritin and thyroid. But just wondering 80/50 is too low isn't it I mean any lower and i think i would faint