Depression

I feel like I have been so depressed with this pregnancy. I've had no desire to get out of bed, no desire to do anything and no motivation to do anything. I feel as though my husband is pushing me away and trying to get me to leave him he has been so sneaky lately and not wanting to spend time with me. He keeps doing things which are making my other children not listen to me and I feel like I am failing. I feel as though I have failed in my marriage again.. And I feel like im failing my children.