Help!!

Tiera

Ok so I took birth control pills for 7 days starting on the last day of my period I had sex on the 7 day then the day it says I was supposed to ovulate I had my withdrawal bleed we still had sex but now my period was supposed to start on the 27 an I took a test it said I wasn’t pregnant should I take another one or was my withdrawal bleed my new period I really want another baby