Pregnancy on the implant

Alright so I’ve been on the nexplanon for about 7ish months and up until August, I’ve always had some spotting once a month. I haven’t gotten any spotting since my last period which was mid July. My boyfriend and I had sex this past weekend and he ejaculated in me. Since then for some reason I keep seeing pregnancy posts on social media and being a believer in the world giving me signs and such, it’s making me super anxious.

What is the likelyhood of me actually being pregnant ?

Also has anyone gotten pregnant on the nexplanon?