I've had my anxiety under control.for a while. Recently, the last couple weeks, Ive had weird sensations. I've been really tired. I went to Dr, they said all was good. I've been working 15 hour days u.set tremendous stress that built up the last couple days I am really scared. I've been weak when I stand crying or feeling like it constantly, irritated and grumpy, when I stand I get really lightheaded, I have this flutter in my stomach, kind of nervous feeling, my body is shaking inside uwncontrollably for 2 days straight.