According to your symptoms, it looks like you've a threatened abortion
. There could have been a small sub-chorionic bleed that may have subsided(the brown colour following the pink is indicative).
As you're going to see your doctor, you'll get the needed attention. Meanwhile, take absolute bed rest
, avoid intercourse and all strenuous activity. Please avoid anxiety
as this is going to affect your pregnancy
. Wish you good health.