In the wake of the 7.0 earthquake that hit the impoverished and now devastated nation of Haiti on Tuesday, more stories from survivors are surfacing. Injured Americans who are finally being flown home to seek medical treatment are telling their stories of survival and making pleas for more aid to find its way to Haiti.

Christa Brelsford is a 25-year-old American who was visiting Haiti with her brother Julian when she found herself pinned under the building she was in. Julian managed to escape, but Christa was not as fortunate. "My main objective was not to panic and to stay as calm as I could," she said, speaking from a hospital in Miami. "After I realized I was trapped I didn't know how long it would take to get me out. I thought I wasn't badly injured. I thought that I still had both my legs and my toes. I thought my only danger was losing circulation from the weight."

Julian was able to help his sister by making a tourniquet for one of her injured legs, but it wasn't enough to save her right foot, which later had to be amputated. "I did stay calm," she said of being trapped in the building's wreckage. "I didn't worry. I just tried to take it one second at a time."

Christina explained that she received treatment in the U.S. because the medical care in the country right now is in a state of chaos. Although she lost her foot, she noted that she is just happy to be alive. "It got cold and I knew it wasn't being saved. I'm so happy I'm alive that I don't care about my foot at all. I'm so thankful to be alive," she said. "You can either focus on the pain or you can focus on something else. It's a lot easier to focus on what's good in life than what's not."

Her brother added that despite his sister's injuries and the current panic in the country, he plans on returning to try and help others. "I'm definitely wanting to go back to Haiti," he said. "There are so many people who haven't gotten the wonderful treatment we did. We want to see outpouring of support for these people."

Head here to learn more about what you can do to help with earthquake-relief efforts in Haiti, and for more information, see THINK mtv.