Confused

So in December I got the arm nexaplanon out after 3 years. It was due to be removed and my husband and I decided go on pill in case want a 4th baby. I was on pill for a month and no period. I hadn’t had since the 6 week check up when had bc put in arm 3 years ago. Been off pill for 2 weeks and trying for a baby plus almost 2 months with no period. I’m confused when I should get it my dr says a while takes after nexaplanon removal but my husband and I want another baby. Just wondering what others noticed when removed arm bc.