Confused and very anxious

My mom came today. I'm suppose to have my heart surgery in less than twelve hours. I'm staring at a faint positive pregnancy test. And on top of all that....we just found out that a really good friend of Thayne's just past away leaving a wife and three daughters. Hmm....I'm not quite sure how to describe my feelings. I'm so happy that my mom is here. I am anxious and very nervous about my surgery. I don't know whether to believe the pregnancy test, and if I do, I don't know how to respond to it. I am very saddened by the death of Thayne's friend. I think I am more sad for Thayne. He has had two friends from high school pass away now. All I can do is hug him and cry with him. I wish I could say that it's going to be okay....but I don't know that. Life isn't fair....but how can I feel so sad when I might have another life growing inside me. I'm so confused!