Really late period???

I’ve been on birth control patches for 3 years. I had to skip January’s patches because my insurance stopped covering it and I couldn’t afford it at the time. My period that month was about 2 weeks late. I was able to get this months patches, and I’m on my third patch, but my period is late by 15 days. Is it normal for my periods to be off by so much after missing a month of BC?