Hi Louise,
This happened to me too! It was just before my scan ay 7+4. I stopped feeling sick (I've never been sick so far only felt sick), any symptom I may have had has slowly disapeared. The only thing that now happenes is if I leave eating too late I can't eat - I have to eat as soon as I'm hungry! Heartburn - as soon as I lie down to go to sleep it starts, I now have gaviscon and/or Milk by my bed!
I get a bit light headed now and again and by lunch time everyday I'm knackered, even though I'm sleeping like a log!!
Try not to read in to it too much - I searched the net as to why and it had me worrying more. As you know my scan confirmed everything was fine!
With me I sometimes feel because I can't see or feel anything just yet its mainly more psycological.
If you feel you need a 2nd opinion call your GP or speak to your midwife.
Hope all is ok, keep us updated.
Sam