Spotting, when to test?

Has anyone experienced implantation bleeding? When did you get a positive test? I was spotting for a few wipes yesterday but that was it, very light pink. I remember 12 years ago with my daughter I had implantation bleeding but I never took a pregnancy test. I went to a free clinic since I didn’t have the money at the time and they did a test for me and it was a very faint positive and then they confirmed with a blood test. I don’t know the timeline unfortunately since it was so long ago