It can be stressful, but it can be manageable too, especially if you make a realistic list based on your stats. Realistic means the schools are affordable and you have a shot at getting in. A common saying here on CC is that your safe school is the most important school on the list. Everything beyond that is icing on the cake.
See your guidance counselor at school. Your mom should be able to attend the session. Ask us here on CC for help too. The people here generally know what they are talking about.