I ve had periods where its hard to breathe for the past three days. Today it lasted the longest and suddenly during the time period of not being able to take a full breath, I started getting numb, warm, tingling sensation around my mouth which rapidly moved down my neck, back and arms until eventually my whole body was tingling from head to toe. My sight got blurry and I was weak and faint. It is still occurring, hard to breathe and the tingling moves in waves from severe to light. My joints, especially my knees are very stiff and hurt after this has started...