I suffer from depression and anxiety and I understand completely your inability to pick up the phone or open an email. People tell me "just do it." I can't. And I really can't tell you why. Part of it is that I've isolated myself from my friends and most of my family. I love them and they are supportive but I'm too tired to talk to them. The depression was so debilitating that I lost my dream job. I find the only way I can even start doing something, i.e., call disability, fill out a claim form, I have to take medication for anxiety. And it usually takes me a few days to get to the point that I take the med. When the anxiety is under control I can act. I take medication for depression. Usually this reduces anxiety also however it hasn't in my particular case. Right now your health is more important than missing a semester or two. I'm sure you'll find your college's counseling center very helpful. Be kind to yourself. You have an illness. If you had to miss a semester because you broke your leg you wouldn't blame yourself. If you are unable to make the appointment with a doctor, ask a friend to do so. Or call a hotline. That's what I did and they helped me. I wish you the best.