Stress

How on earth am I supposed to handle stress so that it doesn't affect my poor innocent baby? I'm 17 weeks, separated from my husband since I was 9 weeks. He exposed me and the baby to extreme danger and an uncertain future. I'm at home with my family now, and the stress that they are under to protect me and my future has put the entire house under extreme pressure. I feel like it's all my own naive fault. But I'm stressed from the fighting, the worry, the fear, the separation, the imminent divorce, potential conflict at having to communicate with my ex and all potential issues that will occur once the baby is born. I'm just one person. Trying to stay optimistic but sometimes I'm racked with tears so strong I feel like my baby can feel them. How do I calm the hell down????