What was your implantation bleeding like?

Exactly 9 days after trying to conceive and a week before my period was due I bled, not terribly, but enough that I wore pads for two days. My period is due this weekend but I’m wondering if this bleeding was implantation or just crazy Aunt Flo? My periods usually last 4 or more days and I’ve never had two in a month.

I’ll take a pregnancy test this weekend, but if it’s negative should I keep testing or should it be positive by now if pregnant? Thanks!