Trish that hcg result is great. REally good. It is too late for an implantation bleed but if you have a little haematoma there that is very likely where the bleed is coming from.
Rest as much as possible. Drink lots of water. Take extra folate (more than the recommended doseage. Eat folate rich foods (especially strawberries - many older midwives suggest strawberries when bleeding in pregnancy ).
MOst of all know that you have a whole LOT of women praying, hoping and barracking for you and your little one!