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.
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.