I feel like I can't handle this anymore ?

My heart rate goes up being prego with twins and now I have fever and chills and vomiting all the time and can't sleep good anymore and I feel like I need to get abortion cause iam scared of dying cause of my heart rate going up I don't want to get abortion. But I feel like that's the best thing to do for myself I have seriously bad panic attacks and anxiety and health anexity I can't deal with it anymore and the pregnancy makes it worse does anybody esle have this where they make it alive and don't die giving birth or going thru this