Baby heart beat

Is anyone else who uses a home doppler absolutely in love with hearing their little ones heart beat galopping away? I'm 10 weeks 3 days and have been listening to it since I was 8 weeks 4 days. I swear If I didn't have to push the doppler on my belly in such a precise way I would fall asleep listening to it ^-^ I've heard conflicting things about the safety of excessive use of the doppler. Some say it's fine and others are worried it's not. I would think it would be hard to judge what is excessive or not. I'd think as long as you are not using it for hours straight daily it should be fine. Even then there may not be a risk. Opinions?