I believe I have been bitten/stung on my RIGHT hand, wrist, bicep, LEFT elbow, side of neck & cheek. All are irritating, but not as bad as the wrist. This has swollen extremely badly over the 48hours I have had the red blotches that have led me to believe they are bites. My veins have darkened and my right hand/wrist is tense & painful. What has bitten me and what can I do to get rid of the pain and itching asap?