Nexplanon: I'm so sad ! aunt flow came in today 😭

I took a pregnancy test this morning since I was a day late . I had every hope up specially with my husbands bday being tomorrow that would of been the best gift ever to him . I got off nexplanon on the 13th of last month and got my period on the 14th. I had nexplanon on for 3.5 years. I feel so heart broken . How long did it take you ladies to get pregnant after nexplanon ?