what's going on with me?

I got my nexplanon removed September 15th after 3 months with it in. my period ended on the 14th of September and then when I got the nexplanon removed I bled again from the 16th till the 21st me and fiancé have sex practically every day and we are TTC my normal period should've come by the 10th but nothing taken several hpt and all BFNs still waiting and just testing every 3 days for now but what might be going on?