Girls, does PMs really affect your mood? Is it really uncontorllable?

PMs affect each one of us in a different way, some have mood swings, some have nothing. It is hard to control a mood swing... PMs can affect the mood and give somewhat of a mood swing. If it happens no more than a week per month, and it is always following the week it should be from one month to the other, then she probably has mood swings due to her PMs. But otherwise, it may be something else. I hope this helps. :)