Afraid my hubby might develope a drinking problem?

Lately my husband Nick has been under a lot of stress. He's nervous that he may loose his job soon, his brother (whom he's incredibly close to) recently came out and told Nick he's gay and is asking him to help think of how to break the news to his wife. Not to mention the 7th anniversary of his son's death is coming up tomorrow (which is also fathers day) and those are only the biggest things on his plate. Now, lately i've come home to find Nick drinking. Nick's always been more of a social drinker and was never too big on alcohol to begin with. He doesn't drink enough to get drunk but he definitly has more than a few glasses. I'm probably worrying to much it's just he's drinking more and more each night and alcoholism runs in his family and i don't want things getting any worse.