Baby(ies) heart beat at home

Hey everyone, so I just picked up one of those Sonoline B fetal heartbeat monitors for home. I am only 6 weeks and a few days according to my last period so I thought for sure it would be too early to detect anything. Well...I just got 2 different sets of heart tones ranging from 110-120 on one side of me and 125-135 on the other?! Umm is it possible that it's twins or one baby? And apparently I'm further along than I thought to hear it now?! Thoughts??