What does spotting and breast pain mean because 5 years of taking Yasminelle tablets?

I have been taking Yasminelle tablets for 5 years now. I tolerate them very well. At the beginning of taking the pills, my breasts hurt a lot and were swollen. After that, I had no symptoms. Now, after such a long period of taking these pills, the cycle earlier and in this cycle breast soreness appeared again and in this cycle after the 12th day of taking the pills there was a mid-cyclic bleeding. What this can testify. Is this a cause for concern?