Questions!!

So back in May I was diagnosed with pcos, we tried provera to get my periods to start again but didn’t work so I started on the lowest dosage of birth control I could go on , the first month I end up having a period for 2 weeks but this month my

Period is 2 days late, could my period last month throw off this months period?

I’m cramping and my Boobs hurt, they have been for a week or so now. But should I wait awhile to test to see if my period starts up or should test? I’m so confused,