Just over it... rant

I'm seriously so over life right now. Nothing is going right. My husband is about to be laid off at work, we have 2 toddlers and I'm pregnant, the brakes on our car just went out and we have $0 to fix it. I'm constantly miserable. My relationship with my husband is pretty much sucking at the moment. I feel like he is cheating even though he Says he isn't. I just can't shake the feeling. I have zero self esteem and I feel like he could do much better. I have no energy or will to clean my house or even do anything remotely wife life, except feed my kids. I just can't take this crap anymore.