Can you get pregnant if only take birth control for one week and then decide to stop ?

So I’m married and we were deciding that we should wait until August to start trying . I only took the pill for one week at the beginning of my last cycle but the side effects were terrible so my husband said it’s ok to stop them . We have been intimate and are prepared if it does happen . My period is only a day late . Does taking the birth control for a week delay my period or could I be pregnant?