I've been trying since about 8-1/2 weeks, lol, every few days or so. Finally got it today, at 9w5d. :D My baby is really in there and I HAVEN'T been sick for nothing! lol.
I'm not even trying for another week or two, but good for you! So happy you're hearing it! We saw ours, at least, at the u/s about a week ago. :)