What Causes Tingling Sensation In Arms And Legs?

hi, i have been having a tingling sensation in my legs and arms all day today.tingly and sort of weak. i feel a tiny bit lightheaded, perhaps, i'm not sure how to describe the way my head feels, it's very mild.
i've been feeling tingly and a little weak in my limbs for a little while almost every day since maybe a few days ago. i'm on this protein diet, it's called ideal protein. there are no carbs in it at all. i take supplements with it because it's a rather restrictive diet. i wonder if that's what's causing my weird sensations. they certainly coincided with the beginning of the diet last monday. i'm a 35 woman and weigh about 210 lbs. i've been working out a lot lately, part of the weight loss program.