Postpartum 6 week s*x

I’m 6 weeks postpartum and I had sex about 5-6 days ago my boyfriend did not do it in me but I know there’s still a chance from precum My <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period app</a> says that yestuday was ovulation day and when I went to the bathroom today I had very clear gooey mucus with a tiny tiny bit of pink blood is there anyway implantation bleeding can start this early ???