Cerelle pill and period like cramps

I used this for 6 months hoping my body would adjust but had to stop. My periods became really irregular, and super heavy. The first month, I had 2 periods (both lasted around 10-12 days), second month I got one period, 3rd month I got nothing, and then months 4 - 6 I had 3 periods in 7 weeks, all lasting around 12 days and far heavier than my normal periods. I felt like I had backache most of those last couple of months as that's something that happens whenever I'm menstruating. I've tried other pills and never had side effects like this, so I've stopped these now and will go back to another type of pill.

Had some mood issues during the first 3 months such a depression, low moods, emotional but put that down to my body adjusting. But after 5/6 months all the side effects of depression, low mood, constant crying can back much worse. Had 6 week period cycles with irregular bleeding and spotting and heavy cramping. Had to come off the pills as they were affecting my life so greatly.

Started taking in April 2024 finished the last pack September 2024. Had spotting for the first couple months in the place of period which was frustrating (spotting for 14days instead of normal 5-7day period flow). Once settled, periods just completely stopped which made me feel slightly uneasy as there’s no indicator of “missed period” for pregnancy sirens to ring. Mood was a strange one, felt slightly mentally exhausted but difficult to tell whether that was life or the pill, but I do remember having PMS type symptoms (emotional, cramps) once a month, almost mimicking a period without the bleeds.