I'm Lily I'm 15 with severe anxiety.

I need some help as I'm not to sure what to do. I'm unable to leave my house as I'm so anxious about going outside leaving my safe place, people hurting me or seeing people who are mean. I haven't been able to leave my room for weeks, I have really bad painck attcks multiple times a day. 

My school is phoning a lot trying to help and telling me that I need to go in, and trust me I do try so unbelievably hard to get in but I can't. Doing any task is a struggle right now. 

I don't know what to do.