Question: really big!

So, I have my period on 26/07 (normal) and my second period on 21/08 this period was brown and it was spotting but like 10 days. Cramp.

I feel weird, I have weird symptoms tired, dizzy. And a few days ago, it was time to my ovulation. So I took a ovulation test, and it was a massive positive.

I took another next day, another positive. And my sexual desire was really low, so I took a pregnancy test. Super positive (said pregnant 2-3 weeks)

When was my period? On 26 or 21? Or 21 was implantation bleeding ?

What do you think lady’s?