first time pregnancy, baby heartbeats?

Sydney

maybe im over thinking this a bit, but..... im 13 weeks and i get 2 strong heart beats from 2 different areas one high on the right, beating at 120 to 127. the second on the left a little lower in the 132 to 138 area. they both never change and they both are clear and strong. my mother keeps saying possibly two babies in there. my appointment a week and a half ago the doctor stumbled over a heartbeat that was a little slower and was confused. she decided to go past it and keep looking for the faster heartbeat. its kind of the waiting game ig but didnt know wat others thought i have twins on both sides of my family, idk about the fathers family. never really asked.