HELP!!! I Think I accidentally permed my hair!!!

i blow dried my hair with Cantu leave in conditioner then I straightened it with my ceramic  straightner at 455 degrees. My hair turned out great but it won't curl back up. Usually when I get it wet it auto curls now it won't. It smelled like I permed it but I thought it was the heat. I washed it and conditioned it and it still won't curl. It has these straight curls like a white curl getting out of the shower with wet hair not my tight coily 3c hair. What can I do to get it back? HELP!!!! I'm in the process of growing it out and I hope I didn't just ruin my hair.

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