Pills messing with my PMS?

Sorry this is gonna be kind of long. I was on birth control from January up until the beginning of October. I ran out of pills and havent been able to get them back yet. I've had one period since not being on them, my next period is due in about a week. Before and while being on BC, I never experienced any symptom of PMS until the day before or the day that I start. I'm cramping and having backaches now, with it being a week away. My question is could my BC have changed how soon I experience PMS?