AF Due Feb 9 and this cramps are killing me

Emely
I'm on Bc since August 2014 to make my cycles regular, I was diagnosed with pcos @16 , before Bc I had painful heavy periods , cramps from start to end , nausea, migraine, it was like hell , but after I started Bc I got much better, this month it's different, I'm having this awful cramps and I don't know why if I'm taking my pills 😕😧😩