Thank you for requesting my help.
It sounds like your husband is using alcohol as a way to dull the pain of whatever he is feeling. I am also concerned about the weight loss. Drinking instead of eating will cause some weight loss so this might be the cause but he should also been seen by his doctor just to be sure.
There is nothing wrong with you being upset about your husband's behavior. Actually, I would be more concerned if you were not upset. You have a right to understand what is happening with him and to try to help. In a marriage, each partner should put the other one first and right now your husband is not doing that with you. He is putting himself and his needs ahead of you and your concerns for him. He should be addressing this problem and seeking help for himself.
Since it does not appear your husband will seek help, it is up to you to decide how you want to respond. Here are some steps you can try:
Encourage him to see his doctor
Contact his doctor to let him/her know what is happening and ask for advice
See a therapist yourself and encourage your husband to go with you
Consider a separation
You can also get more information on how to handle your husband's drinking through this link:
Here are some other resources that can help:
Marriage On The Rocks: Learning to Live with Yourself and an Alcoholic by Janet Geringer Woititz
Get Your Loved One Sober: Alternatives to Nagging, Pleading, and Threatening. by Robert J. Meyers Ph. D. and Brenda L. Wolfe Ph.D
You can find these books on Amazon.com or your local library may have them for you.
It is understandable that you want to be there for your husband. But until he sees that he needs help, he will most likely continue on this path. So it is important for you to get as much support as possible for yourself. Family, friends, support groups, medical and mental health professionals are all good sources. Whatever you can do to help yourself through this tough time.