A little concerned

Joy
I'm not sure if I should be concerned about something. I have found my baby's heartbeat on my home fetal doppler 3 times now and it's always in the same spot (from 12-15 weeks). It's down on my lower left side, just above my pelvic bone and probably 2.5-3" over from the center of my belly. For my 12-week check-up, it was in the same spot as well. I just felt around for my uterus, and it's definitely off to the lower far side. Should I be concerned that it's not in the center? Should I be concerned that it's (seemingly) always in the same spot? Could my baby and/or uterus be stuck?