Confused! Please advise me!!

So, I did my testing on Sunday and had a poll here, and the result was 100% - ovulating soon.

Then I went ahead and tested the next day, yes with first morning urine and I got peak. And when i took it in the evening it was no longer positive. But the T line was still dark.

Then I tested again the next morning, it became positive again? And when I tested on the same day late morning and afternoon, it was negative and very negative.

(Top: CD 19 night

Middle : CD 20 FMU

Bottom : CD 20 evening urine)

Cd 22 night(yesterday)

This morning CD23 FMU.

On both CD21 & 22, I do get some spotting and blood tinged cm but no cramps.

Anyone in the same boat as me? Should I continue testing?