two days ago, when i went to lay down in bed, i felt a bad sting, and i got up and ask my husband to look at it and when he did, i had a huge knot on my right shoulder blade at the top with a hole in it, with pus and blood coming out of it. So he squeezed all that out, and put alcohol and peroxide on it for me. It burned and stinged so bad, to where i couldnt lay on that side for two days and it still hurts to touch it and lay on it. I have been experiencing pains in my heart and drowiness, coupled with diarrhea. Did i get bitten by a spider? And it also now has a black head and is still swollen.