Bridget says she popped the blister after 3 days because she couldn't take the pain and pressure. She was advised not to by her physician, but did anyway. There's not really a right or wrong here, the blister would probably break and drain at some point, but you don't want to encourage it prematurely. She could have introduced another form of bacteria and possibly made the infection worse.
It turns out this is not a spider bite at all. It is a skin infection from MRSA. Hopefully, Bridget follows the rest of doc's orders, especially about taking all her antibiotics.
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