Having a baby has ruined our relationship?

basicaly our baby is 10 month old we have been together for 2 year were both young and our relationship has gone down the pan! we bicker constantly and i just wanted to know can we get through this? its been like this for about 6 month,and we have tried loads but he works 6 days a week and we are both stressed and tired,emotionally and physically. Can this get better? we have no life and we point out eachothers flaws,i do want it to work and so does he, has anyone come through this? please help! it doesnt help that ive never had a stable relationship around..