Depakote and periods: Has anyone else experienced changes?

So I used to take depakote daily a few years ago, had a while where I didn't take it at all because my symptoms were pretty well managed, and then started taking it again. For those who are on Depakote and have periods, have you noticed that it has influenced the frequency of your periods at all? I used to never get periods (as a side effect of my birth control), but since going back on Depakote, I've both started getting periods again and they have been more frequent. Like every 2 or 3 weeks instead of monthly. I've also noticed if I ever accidentally miss a dose, I'll get my period like half a week later. Can anyone else relate?