Where’s my laugh gone

I haven’t laughed in such a long time I feel so miserable I don’t even want to smile at the moment. I sit on my sofa, I crochet, I spend time with my dog or I sleep. I don’t do anything. Because I’m off work I have to be careful about spending money and I don’t want to go out because my back hurts I is like relaxing with my hot water bottle. I have started walking my dog a bit but I need to start doing things and saying yea to friends wanting to see me…I just don’t want to…