Hey
I've been feeling really similar to this the past few days. My head feels really whoozy and my hands start shaking. Normally it helps if I have a glass of water, sit still, and try and cool down, I carry around a little battery powered fan all the time now! Snacks help as well, and I'd recommend the same as domestichuman. If I have some cheese, I feel much better, sugary things don't seem to help me!
xx