Late Implantation Bleeding??

I got a positive peak ovulation strip test on 7/31, and today 8/12 I started having medium spotting after sex. Its light pink, not like a period. Any chance this is late implantation bleeding or is this my period coming? My periods are extremely irregular so there’s no way to tell when it’s due! Also, I took a pregnancy test on 8/10 and today 8/12 and both were negative but I’m hoping the levels just weren’t high enough yet 😞😞 Been trying for almost 8 months so 🤞🏼🤞🏼 any opinions are appreciated!