Ok, a timeline of events:

Tuesday, March 4 - miscarriage
Sunday, March 9 - miscarriage bleeding ended
Saturday, March 15 - noticeable cramping on right side
Monday, March 17 - beta was under 5 so miscarriage is over

I've taken OPK Wondfos everyday for fun after the cramping on Saturday. I've had two lines every time though they haven't been exactly positive. Today I've been spotting but only when I wipe. Is it possible that I ovulated so soon after my miscarriage? What does spotting around ovulation mean? Low progesterone?