Trish I had the exact same thing happen to me thats all that could be seen I was 5 nearly 6 weeks and had a subchorionic bleed at the site of plantation. They took my bloods to show my hormone levels were still rising several times and waited till 8 weeks to look again and there was a bubs with a heartbeat!

Try not to stress sweetie its still early, there is a sack and they know the source of the bleeding!! I've had two bleeds since then from subchorionic collections and they had healed up at my NT scan. Keep positive and take it easy don't give up hope yet