I had a strange looking mole on my back a few years ago. I went to the doctor, she examined it, and removed it right in the office. She sent it away to get tested and it wasn't cancerous. I had another one I noticed a few months ago and she removed it. Some people have more irregular moles and my doctor suggests getting a skin exam annually. You did the right thing to get the doctor to exam it. There isn't anything else you need to do except go to the appointment and let them take care of it.
Many people get moles like that and it isn't cancer. I am one of them. And people catch it early with exams which is good. Your mole may be like mine and all will be well.