You best try and see a Doctor right away. Like maybe the E.R. Those bites can be dangerous ! Read this A.S.A.P.
Black Widow Spider Bite-Topic Overview - WebMD
I was just bit by a black widow! What should I do?
This is a serious matter, if you have trouble breathing call 911 immediately. Otherwise you can apply a cool compress to the area to help with swelling and pain, you may develop muscle cramping and abdominal pain, nausea, vomiting....best to get checked out and be safe.
Get off Blurtit and tend to your bite.
Quickly write your last will and testament.
CALL EMERGENCY! They're really poisonous! Also, if you haven't done that already, you should write your will