Is this all my fault?

I think my husband is going to leave me because of our money problems. I am having a difficult time finding work. I was hired as a substitute teacher and have applied for many more jobs but I am having a really hard time getting consistent work. I have sold all of my jewelry including jewelry that my mother has given me to help with the bills but it is not enough. He has told me he is tired with the whole situation and has been very distant from me. We used to be physical on a regular basis now he barely sees me or touches me. I have tried to talk to him and ask him to please not blame me but so far the situation looks hopeless. What should I do? I feel worthless.