I never went to see a doctor after my miscarriage. What could be the consequences for this? Its been about a year since it happened

You are fine. If you are alright for a year after miscarriage then looks like you are going to be ok. Relax and enjoy life.
Small risk. Miscarriages are fairly common and most of the time are just a chance occurrence. Rarely would there be a problem with not following up with a physician. If miscarriages are recurrent then an identifiable and treatable cause might be able to be found which would help you avoid a future miscarriage. If menstrual cycles have returned to normal there is probably no problem.