I am on my CD 24 after 8.5 days taking progesterone i wiped in the bathroom and found some brownish discharge، could it be my AF or is it implantation blood? I am so confused and i still didn’t finish my progesterone dose i have 1 more day to go. Please advice i an not sure if i do blood test today would that show if i am pregnant or it would be just a waste of time and money? My opk was positive on CD12 which was 2nd may, and i took trigger shot on same day which means I ovulated 14th(4th may), so today i am CD10.