Confused

Korrie
About 3 weeks ago I got my implanon removed right at the end of my last period. My SO and I are ttc baby #1! All last week I had pms symptoms and AF was supposed to start the 3. Took a test last night got a BFN all of my symptoms are gone but no AF I've always been super regular with my periods with or without bc. Any ideas? Should I test again on Sunday?