Try a new doctor or Doppler it???

Rose

I got my BFP last week! I am now 5 weeks + 2 days and when I called my ob, he can’t fit me into the schedule until I’m almost 13 weeks. I want an appt sooner because I just want to make sure everything is ok rather than wait that long. Should I try a new doctor just for that initial appt to make sure everything is ok at 8-10 weeks or try and Doppler the heart beat? Has anyone ever used those at home dopplers to find the heartbeat? Thanks so much for any advice!