Can implantation cause a positive on a pregnancy test?

Ok. So my AF was Sept 2-8. Ovulated on the 16th. On the 25 (9 dpo) I got a positive test. I had tests & wanted to test just because. Everyday after, I’ve been getting negatives. AF is supposed to arrive on the 1st. Could it be possible that I got a positive when implantation happened & there still isn’t enough hcg? Or should I just expect that I’m not going to get pregnant this cycle?