I was misdiagnosed 4 times by a physicians asst. in a dermatology office over a period of 8 months. Due to the misdiagnosis, I had to have Mohs and reconstructive surgery on my nose and will require additional treatment for the scarring and to correct the shape of my nose. Will a medical malpractice attorney represent me and just take a percentage and fees from the settlement as I can't afford to pay up front?