Most people that I know who were suffering from depression had needed some form of medication to be able to get out of the bed! Only after gathering the strenght needed to perform even basic tasks did they go through psychological therapy, altered their life style i.e. increased levels of physical activity and improved diet etc. Or tried alternative therapies.
OP, this is a serious issue, don't leave it unchecked. I know that even your GP can first prescribe you some mild antidepressants, but they will refer you to a specialist for sure. Not saying you shouldn't look for deeper, conscious changes and additional therapies. Take care, wishing you well.