It sounds like things have improved for your piggy, so just see how she goes for the next few days. Hopefully you won't have seen any more bleeding. However, it will be worth trying to find a guinea pig savvy vet, so you know where to go to in the case of any further problem.
I am not sure why
@SkyPipDotBernie has been reprimanded, as I can't see where he is supposed to have told the OP to source prescription drugs from somewhere other than a vet. If I have missed something, please point me in that direction, but I am sure Neil wouldn't have done that!
Anyway, can we all be nice to each other! It's Friday night and I actually have a weekend off! It doesn't happen very often.