I am 48 and recently went back on a low dose birth control pill. i notice that i am a little more irritable and have a mild headache. is this normal?

Side effects?: These may be side effects of the pill. I suggest a blood pressure check to make certain your headache is not due to high bp. If normal, you can discuss switching pills or give the pill some time to see if these symptoms resolve. Many side effects of birth control pills are self-limited (they will resolve with time) as your body adjusts to being on the pill, often within 3 months.