Fetal Doppler two heart beats???

Zorayah • I'm a FTM engaged due Jan 8th,2016 with a little girl 💜❤️💗👶🏼
My mother in law bought me a fetal Doppler I have issues going to the doctor due to my age my fetal Doppler picked up two heart beats different heart rates me and my fiancé are courious if it could be twins seeing as they run on both sides of the parents??? Help us figure it out and I have my first ob appointment in a week so I should see then but I'll be dying to know till then any thoughts would help pleas