Does the combined pill cause heavier periods?

Used for 9 months and at the start I really liked it kept my periods regular but I did notice they became longer. They lasted around 8 days long and became more heavy. Went on this pill to help with the heaviness and the pain but it didn’t help either. In the last 3 months of taking it I began getting random sharp pains that weren’t like cramps they were right at the enterence of the vagina and they became more and more regular to the point it was multiple times a day.

Weirdly my worst side effects were during the week I went off this - dizziness, nausea, headaches. I was advised I could stay on it without a break, but after three months I had heavy breakthrough bleeding (not just spotting), so took a week off and felt dreadful. While on the pill I had more acne as well, which cleared up a bit during my week off. Needless to say this hasn’t been the right pill for me.

I experienced severe discomfort when on my period and very heat bleeding and blood clots, very large ones.