I looked this up for you... from what I've read, only slow heart rates should concern you, not higher than average heart rates. I hope that reassures you.
I am not a frequent posted, but I have read about your struggles and am so excited that you are once again pregnant! I am sending you positive, healthy vibes with the hope that this is finally your baby
And from someone who has 1 DD (and TTC #2 for over a year now), I can honestly say that yes, 1 baby and its parents (or parent in those cases) definitely makes a family, so enjoy