Sufferer of chronic depression.

Do any of you ladies in relationships have clinical depression? I have been going through it for about 7-8 years. I've seen 3 therapists, been on medication and off again, and had my ups and downs. I'm worried that my boyfriend of over a year will get tired of dealing with me and my illness because of the way I act sometimes. Some days I can't tell him what's wrong because I can't even think of the words I want to say.