I woke up with a black blood blister on the inside of my left cheek. The strange thing is my wife woke up with the same blister inside of her left cheek. And neither one of us had this when we went to bed.

We have compared notes and have discovered we are sharing many symptoms, same headache, same painful neck muscles, same itching, same burning under our arms...

Something strange is going on

I would leave the house, bring your pets and family members with you. Go to the emergency room. I'm wondering if it might be carbon monoxide or something similar.