Is this for real?! OPK

I can’t believe I’m seeing a positive ovulation test when the other day there was barely a line! I used FMU. Could my FMU be throwing it off? My last Clomid pill was taken Sunday Feb 25th Last month I didn’t get a positive until cycle day 18 & 19 I didn’t test yesterday thinking the line wouldn’t be that dark yet 🤦🏼‍♀️ I suppose I should retest later?