Morning everyone!
Sorry to hear about the spotting, mssleepyhead. But like the others said, I have heard of quite a few people who have brown spotting until fairly late on. Hearing the heartbeat is massively reassuring. 
Welcome, thebestnames!
Really lovely news that you got to hear the heartbeat, Euro - apparently some midwives just refuse to check at 16 weeks. Seems very mean!
DisneyDiva, how lovely that your parents are getting so excited with you! Is this going to be their first grandchild?
Lots of scans today! Good luck to it'ssofluffy, Polkadot1, thebestnames and Travis - hope all goes smoothly.
Hungry, I feel the same about mine on Friday - excited to see the baby but also increasingly nervous!