Period / bc patch help

Hey guys I just have a question and prob gonna be stupid . I’m on the birth control patch since I don’t want to have another baby I gave birth 7 months ago . I’ve been on the patch for 2 months this would be my second period . I haven’t gotten my period yet and I’m suppose to put a new patch on Sunday . Do I wait till I get my period or just put the patch on ? I’m new to the patch . I already took a test for pregnancy and it was negative . So I think it might be stress . If your familiar with the patch and have some insight.