Thank you for the advice and for sharing your story!! Bless!
I have been through a MC before when I went for my first scan and they could not find the heartbeat. We were obviously devasted, but they did not say anything else just that the baby had stopped growing at 7 weeks and this was at the 12 week scan. I think maybe it is too early to detect the heartbeat at this stage, so things maybe fine and you could be worrying needlessly, stress is not good for you at this stage and I would try and be positive.