Ladies, help, Im a little worried?

Ok, so I am on yasmin birth control and have been for 5 months now. At the end of the second month, all of the side effects were gone( I had nausea and moodiness in the beginning) but now Im on the third week of my packet, I have been having very bad cramping and bloating for the past 3 days. I should be getting my period next week sometime, so do you think it's just ovulation cramping, because I have heard you arent supposed to get that while on the pill and the past couple of months, I have not had any cramping until I actually get my period. what do you ladies think? Is it ovulation cramping or could it be something else?