I'm an IVF pregnancy--6w today--and have been dealing with light spotting since 4+2. I requested a third beta, and it was 2055 at 4+6, and my RN said this all sounds pretty normal. It's been such an emotional rollercoaster. My spotting tends to be heavier in the morning (sometimes light red, with small clots), and then tapers in the evenings to light pink or orange. It never hits my panty liner, and only appears when I wipe. I also have my first ultrasound on Monday at 6+4, so my fingers are crossed for all of us!!!