Implantation bleeding?

I’m hoping to be pregnant with my second. My period started May 1, and usually 28-29 days. According to Glow I should be starting in 4 days.

I did not have IB with my first, and today I saw this in the toilet as I was about to flush. I have had zero discharge since then. Picture is blurred since ya know, kinda weird and gross 😂

You can’t get a positive test on the DAY OF implantation right? I took one just out of excitement and it came back negative. Should I keep my hope until my period comes?