Hi, first, congratulations! It is more common than people think to have pink/brown spotting in the first trimester of pregnancy. But, I would get it checked out as soon as you can. At 6 weeks they should be able to see the heartbeat of your baby on the ultrasound. You should also mention your thyroid issues when you go in for a checkup. Hope that helps.
1/10/12 at 2:09am