Can men have PMS?

My husband is slowly ruining our marriage. I had a deadline of November to decide whether or not I am leaving him, and that is quickly approaching. He tends to be negative, moody, and thoughtless about one week out of every month. The other times he is pleasant, helpful and receptive and open to conversation.

His mother is bi-polar, so I have put some thought into whether or not he could possibly have some sort of mental problem. The bottom line for me is this is not a happy way for me or my children to have to live. We don’t have health care, so seeing someone is out of the question. A couple of months ago I bought him some St. John’s Wort because I know that helps with mood stabilization, but he can’t remember to take it, and I don’t have the time to babysit him since I have two actual children that need my mothering, a full time job and a full time school schedule.

Any ideas?