Lightheadedness and blood pressure changes

Has anyone experienced absolutely crazy ups and downs throughout the day of their blood pressure/sugar? I feel like I’m constantly checking myself to see if we’re getting too low and need something to boost it up. Yesterday I wasn’t hungry for a bit and since I go off of if I’m craving/hungry, I didn’t force down a meal and ended up getting fully numb hands and a headache from hell. I was literally boarder-line passed out for two hours until I could stomach food :,( because of the hurricane I missed my appointment today with my ob so I cannot even have her input on this yet, but how did you manage?