smurf it was probably dtd which started your bleed off, but from what I've read, and from what GP and MW have both said to me it wouldn't harm baby. It's more than likely your cervix getting "bumped" and as it's full of a lot more blood than usual, it can bleed when irritated..
Legend no one told me to abstain, neither before my bleeding nor since. I've spoken to so may doctors/nurses/sonographers/MW since having the bleeding (most colours now!) and most people tend to agree that it is dtd which is causing my bleeding, but not one of them have told me to stop. At my scan on Sunday I was bleeding and bled all day, but there was no reason for the bleed on the scan and she managed to spot my cervix which she said was closed, so baby just fine in there.
From what I've read, it's highly unlikely that dtd will cause miscarriage, but if you're worried, it can't hurt to abstain for a while. Until around 12 weeks I guess. I don't know if 12 weeks is given as a time frame because it's when you're likely to have what would normally be a first scan, or if there's a genuine reason for saying 12 weeks?
Anyone suffering from nose bleeds? I'm getting one almost daily now and can't blow my nose anymore for fear of starting another. Which is a pain as I've got a constant stuffy nose too!