Welcome Jagster. I am pretty new here as well. Been spending sometime in another forum. I am glad you and I found a place to discuss these issues. It is tough finding people who will not judge you for this behavior.
Sometimes alcohol and SI are related for me as well. You are not alone. I can see someone coming in here and saying just don't drink. But they may not understand that drinking is self harming as well. I use alcohol to change my feelings.
I hope to be able to share more of "my stuff' when I feel more comfortable with this forum.
<font color=white>laughter really is the best medicine</font color=white>