45+ day cycles

My husband and I have been married for 2yrs and we started ttc 4 months ago. I have always had long cycles. I blamed it on being overly active and low BMI. I was on the pill which regulated my cycle but now that I am off the pill I am back to 45+ days. And to make matters worst I haven't had a period since August and we're not pregnant. I want to get pregnant now but ovulation is so few and far between. Is it time to seek help?