xulane question

Okay so idk how this app rlly works but i’m desperately trying to find answers. so i just started xulane, the birth control patch approximately two weeks ago. i read online somewhere that you can start it anytime, you’d just have to use protection for 7-10 days first- but that’s not my worry really. i started the patch mid cycle- i didn’t wait for the first sunday or the first day of my period. does this effect its efficacy??? like i was supposed to have my period yesterday and it didn’t come but im used to late-ish periods. i’m having what i think are pms symptoms but idk if it’s from the patch? did i fuck up by starting mid cycle after the instructions explicitly said to wait? online said it does matter, i’d just have to worry about the risk of pregnancy. ugh idk