Cappy by 6w3d you should have a heartbeat. It's not too early!!!! My little girl was a early implanter, I saw her heart beating at 5w6d!!!!!
Good luck sweetie! And don't ever apologise for having to post that, you are blessed to be pregnant, and we all know why you apologized, but don't ever be sorry that you are and some of us are not. We are very happy that you are, we all know how hard it is, and what you went through to get there! So thank you for being sensitive, but we all understand and are supporting you.
Good luck!!! Let us know the news!