Left breast stinging, feels like I'm being electrocuted in it.

Thank you for your question.  Unfortunately, you have not mentioned what breast procedure was performed prior to the pain you are describing.  Often the pain you are describing is associated with normal healing following a breast augmentation.  Best to follow up with your plastic surgeon.  Best of luck.

Thank you for your question.
"Horrific " pain is generally not normal after breast surgery.
Now that said, some amount of discomfort and pain is normal post operatively.
Often nerve irritation can cause patients to experience occasional sharp/stabbing/electric type pain.
Best to contact your board certified plastic surgeon who performed your surgery to schedule a follow up asap.

Best of luck to you!