Dealing with depression

I woke up today and I was just not myself, I wanna cry so badly. I never felt so dark. I didn't go to work just lay in bed cry and cry just feel so ILL I wanted to ask someone for help but couldn't do it. It's like I couldn't speak to help because my mind was so wrapped the fact I was depressed. I guess I let myself suffer today. My friends noticed I wasn't myself either. I didn't know what tell them because they would be thinking I'm making it up.