Mama, yan usually means baby is transverse o lying sideways sa tummy mo, kaya ang heartbeat mo naririnig on the side ng pusod instead of lower or higher! A few of us had the same experience during pregnancy, basta walang complications, babies still move around a lot pa kaya basta i-monitor mo lang at i-mention sa OB mo sa next check-up para sigurado lang sa position and overall health niya.