I have been getting pins and needles all over my hands and arms and legs and getting shaky and cold sensations and also feeling (and being) sick. Has anyone else had this? I don't feel like I'm panicking but when the prickly feeling starts I then start to hyperventilate (I am confused because i thought it was the hyperventiliating that caused the pins and needles stuff, not the other way round!). Very grateful for any response - thanks for reading this.