I lost my two best friends and feel very vulnerable and alone...?

Awe Andrea, listen hon.. You must walk into the school your first day with your head up high. Walk with confidence and wave and smile at all the new people as well as the old. I bet someone from the past or new will give you some attention and actually seem interested in being your friend. believe it or not, there are more like you at your age that are feeling the same way right now. You all have to break the ice.