I'm using chasteberry for irregular periods. I used to have very irregular periods that were late at least by one week every month. I also had heavy bleeding, cramps and migraines due to the irregularity. Since using chasteberry, my periods have become more regular. They now arrive every 31 days as they are supposed to and as a result, some of the negative symptoms have reduced as well.
I don't know if chasteberry will work for everyone but I do think that it's worth a try.