Negative tests and then tested positive afterward?

Hi,

I'm currently on day 26 of my cycle. Usually it's between 28-29 days. I often feel my egg 'growing' around my ovulation. I used to think this was my ovulation, but research apparently shows it's a type of growth you feel.
By chance I still had one ovulation test left, I did it and it was positive. But well, whether that was just after my egg or shortly before... no idea. I calculated that I had my ovulation that day, so ovulation 1-2 days later. So next Wednesday would be my expected period.
Since I still wanted to check, I did an early action test on Monday. This gave a faint line, the kv5 I thought was a test line and the next day a Sensitest and this one was white... Maybe too early.

Then my question as it also says above, who has also had this kind of sequence, tested negative and ultimately tested positive anyway? And do you remember what symptoms you had?
For now I've had vague stabs in my lower abdomen since Saturday, today it's less but I still feel it from time to time.
Looking forward to your stories!