Marriage... Over??? Kinda long... I'm so sad!!!

We have been married 4 years and together for almost 6. We have two little boys together ages 5 and 2. This past year has been really stressful. Dealing with addiction, money, bills... Etc. We don't communicate anymore. I tell him how I feel and he just shrugs it off like he doesn't even care. He travels for work so he's never home. He hardly ever calls me when he's gone. I text him and call him all the time. I tell him I love him and just little things like that so he knows I'm thinking about him. He never does that. I seriously feel so unwanted and I feel ignored. I'm lonely and I have cried so much lately. We have been fighting a lot. I open up to him and tell him these things and everytime I get the same response... NOTHING. Is my marriage over? I don't know what else to do??? I can honestly say that I've tried. Sorry just have no one to talk to and need some advice or something.