I got positive OPKs CD 21 & 22, currently CD 38.

Starting CD 35, I had some very light spotting and super light cramping that just came and went.

CD 36 I took a test and got a very faint positive (first picture w/smu).

CD 37 I took another and it was a stark negative (middle picture w/fmu). I took a second one later that day and got another faint positive (third picture w/smu).

This morning, CD 38, I took one in spite of the semi heavier flow (still not enough to fill a pad, only when I wipe) and it was another stark negative, no whisper of a line w/fmu. I still took another one because I don't want to give up (last picture w/smu) but it was also negative.

At this point I know it was a chemical and I am heartbroken.