Hi everyone, I've joined this thread late (first post on MN! 
). Have been ttc for over 18mos, and had all but thrown in the towel (and was being instructed by my GP to get a load of blood tests and a scan done to see what the problem was) when suddenly af didn't show up, and realised what was going on!
A day after a ppt (last week), I started spotting. I had a mc 3 years ago the day after a ppt, so was convinced it was happening again, but whereas before, I only had a day of spotting and then it came out, this time, the spotting hasn't got heavier or red. Just 7 days of brown, always there when I wipe. No cramps. 
It's confusing and disconcerting.
I phoned up my GP (who's on holiday 
how dare she!), and spoke to someone else who I've never met; he basically just said there wasn't anything to do, and if it got worse, go to A&E. I already had a scan appointment booked for next week (booked it when I didn't know I was pg yet for the fertility issues), so I'm just going to go along to it and hopefully see something reassuring. The GP I spoke to seemed convinced that they wouldn't be able to see anything (it'll be 6.5w), but maybe we'll see a little flicker? I'd be happy with even just a yolk sac, though.
As for symptoms, I suppose in a way those are freaking me out more -- really only have had sore breasts so far, with a little bit of fatigue and some crying, but no nausea, and even those symptoms have waxed and waned a lot. Every day I wake up and check my boobs, and get kind of scared if they're not sore enough! I know it's early days yet.
I'm so sorry to read your news, blondecat and mrstwinks.