I got my doppler out at 10+4 to try and find it and it took me ages. I hadn't had a scan or anything so didn't really believe there was anything in there. Have you used one before? It takes loads of practice, lots of gel/oil and patience at this early stage. Honestly, I tried for ages first time. Make sure you are trying really low on your public bone - or even on your pubic bone for now. And remember, you are super early and there is probably more chance that you won't find it than you will.