I agree with pimaman234. Go to the hospital and have it looked at.
"Professional assistance is necessary to make sure there are no traces of venom left at the site by assuring that any remaining parts of the integumentary sheath or broken spine pieces are removed, surgically if necessary. These can be visualized by x-ray."
http://www.potamotrygon.de/fremdes/stingray article.htm
"Professional assistance is necessary to make sure there are no traces of venom left at the site by assuring that any remaining parts of the integumentary sheath or broken spine pieces are removed, surgically if necessary. These can be visualized by x-ray."
http://www.potamotrygon.de/fremdes/stingray article.htm