Twins? Or using it wrong?

To those that have used a fetal Doppler or mommies of twins. 
Okay so I am 7 weeks & 5 days & I found a heart beat on both sides. This is my second pregnancy & I had a c section Just to give you an idea of how far apart they are they were both a half an inch from both ends of my c section scar & one of them was 127 & the other was 141