How early did you test bfp?

Amanda • Married for five years to my best friend, and Mom of one boy, and new baby girl born 7/15/16
I tested positive at 3w 3d, and I am now 4w 5d. I am just curious as to how early anyone else had a positive? 😊 With my son, I didn't test positive until my period was due. Twins maybe? Lol