Help ....

What does implantation spotting look like & when does it usually take place?

If I had went to the restroom and wiped and it was one bright red line on the toilet paper and was a little pink color after I wiped again does that mean I could be pregnant?

My last cycle ended last Saturday and today is the 2nd day of my ovulation cycle and I had sex on the 31st ?

How’d you know of it was implantation spotting?