Well Ocella is the generic for Yasmin. I was taking Yasmin for 2 years, when last month I was given Ocella. Well I wasn;t too thrilled with it, as I had cramps for 5 days plus I started my period 1 day late. They say generic is always the same, but for me I felt a difference. It could be from the pill. Your body needs to adjust being on it. Side affects should lessen by the third month.
When I was on Ocella I had the WORST breast pain for the full 2 weeks before my period. Due to the pain and the depression I suffered while on Ocella I switched to Reclipsen. I still have slight breast tenderness the week before my period, but it's so slight that it doesn't even bother my that much. Some months, I don't even have the pain at all.
Speak to your doctor if the pain doesn't subside during the next few cycles. You may need to switch brands.