Yeah, if the nozzle is hitting the part, then it’s very likely a cooling issue. If an steep overhang isn’t cooled properly, it’ll curl upwards.
Either you’re printing too hot, or the fan is too slow or failing. For PLA, you can leave the fan at 100% after the first or second layer, and print between 195 and 205°C. Printing too fast also means the fan may struggle with the amount of hot plastic.
Can you paste your slicer settings?
You read articles in the shower?