Chemical perhaps?

I had been spotting light brownish since the 1st (expected AF on 3rd-4th or dpo 11 or 12) and since it didn't get heavier as I expected with my period I took these two tests. Top is last night before going to bed and bottom is this morning (4th) with fmu. Few hours later period-like bleeding started. Seems like a chemical to me :( 6th month TTC, gotta keep trying