I guess I just want to know if this is common (No such thing as normal, right

)
For about the last 6 months, although my periods continue to be depressingly regular (aside from one which I skipped completely), they have changed quite noticeably. Firstly, I have started getting excruciating pain around ovulation (received wisdom seems to say this is due to little water cysts which burst and then the pain goes away). I have never had ovulation pain in my life, so this is completely new to me.
Secondly, the course of my period has altered. It starts (and excuse the graphic nature here) with a day of brown staining, then a day or two of nothing, then three days of Niagara Falls, replete with heavy clots, and then nothing for a day, followed by a couple of days of vague, not worth the effort staining. This is all new to my body.
So please, is this kind of change in the nature of my periods something lots of ladies go through?