I liked my doppler a lot, but you can't hear anything at 8 weeks. Try at 12 or 13 weeks.
I agree 8 weeks is way to early. You will find though that some days are easier then others to find the HB. I bought one from ebay that I thought was junk. I have been renting a better quality one which I will be returning next week. My babies are moving around alot now & I go to OB every 2 weeks so I dont feel I need it anymore.
Best Wishes to you!!
I haven't bought one, but I heard that they're not very good. Even at my OB's office, they had a hard time finding the heartbeat when I first started going in (weeks 12-20). Now that I'm almost 25 weeks along, they can find the heartbeat fairly quickly. But they have the top of the line equipment and it's still hard sometimes. Like I said, I heard that the home dopplers can be really "junky" and don't work very well. So don't be too discouraged!!