Did they say why you were bleeding Salty?
At around 6-8 weeks I had a small bit of brown spotting that was intermittent for around 3 days , but didn't think anything of it (or tell anyone!)
At 18 weeks I had bad abdominal pain that lasted over 24 hours. I got a bit worked up over this (I don't think it helped that it started at around 2am and I was knackered). My sister told my partner to phone the maternity assessment unit and I went in to get checked out. Had scan, urine test etc all was fine.
2 days after this I got heavy brown spotting and a clot, phoned up for advice and was told to go in again to get checked out. They had a look (not at all nice!) and couldn't see anything to be concerned about.
3 days after this I had a massive bright red discharge that totally freaked me out, so back in I went. All OK again (but they couldn't find a heartbeat for ages, and that was a horrible feeling!).
They think it was related to the fact that I have cervical erosion (and a fibroid!). I had red bleeding the day after as well but have had nothing since, touch wood.
At my 20 week scan everything was good (as another thought was perhaps my placenta was too low), and the sonographer commented on how lovely and clear the images were (I had drunk about 2 pints of water and was bursting for a wee at this point!).
If at all concerned always phone for advice or pop into your local assessment unit. The peace of mind is totally priceless.