This is Dr. David
you could have had small fish bites or minnow bites
or you could have been allergic to algae in the pond.
you need to see a doctor to get your skin examined.
you may need to go on benadryl and other antihistamines to see if that helps
you may need a course of steroids and/or antibiotics to help decrease the itchiness symptoms of your skin
you can see a doctor at the ER or urgent care center.
I would start there.
you don't want this skin reaction to get worse.
let me know if you have other questions.
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