Late period and lots of pain

I’ve never missed a period till I started taking the pill. I started on the pill Yasmin plus in November and my period still hasn’t started. I’ve been dealing with bad cramps the past three weeks. Is it normal to not get your period when you start the pill? Also are the cramps and discomfort normal as well?

I’m not pregnant and have never been sexually active. I was put on the pill for pcos (polycystic ovarian syndrome)