Advice !

I'm pregnant, 17 , and this is just a shock to me. I am now 5weeks and 6days I have been feeling horrible symptoms and I am hiding it from my mother. I believe she will not be angry but disappointed in me! I am moving the 2nd week of July to Minnesota due to starting college there with my boyfriend which my mother knows and is so happy about. How should I tell her? I mean I am going to always support my child and myself and so will my boyfriend so she should be happy about that right?????