I did have brown spotting and some odd red bits when I had my first. It started few days after positive test and continue until 8 weeks. I also had cramping.
An early scan at 6 weeks showed heartbeat and also they said it was going to be a mis-carriage (i was in portugal and they were a bit harsh).
I just came back to the UK and booked in with midwife and no one ever checked anything until 12 week scan haha.
Could you get an early scan and pay for it, ultrasounds direct do one for about £80 i think?