Need support and help

I found out last year that I had ovarian cancer in 2000. My gyn said I only had cysts growing on my ovaries and could easily be removed. I went in to the hospital for outpatient surgery. I was also pregnant at the same time. I woke up not pregnant . He did a toal hysterectormy on me. No blood tests were formed a head of time I was never told about having cancer. He never got consent to have the hysterectomy from me or my husband. He just said everything went fine. I was 5months pregnant at the time. I am now having severe pain back in the area. Getting sick and vomiting. My new doctor said that everything is fine. He thinks it is just the weather. What should I do.