Anxiety is extremely common. You will find the counseling center full of kids trying to deal with their anxiety. It sounds like your anxiety is beyond normal and possibly a mental illness. Only a trained therapist/doctor can determine this and what trhe best treatment would be.
If you are diagonise with a mental illness then a five week treatment program is not enough. It is likely you will be dealing with this for years if not the rest of your life.
Now the good news. This illness can be sucessfully treated. Unfortunately it takes time. Some just need therapy, some will also need medication. You need to discuss with your doctor/therapist/family if taking a semester off would be wise. My daughter ended up taking a year off to stabilize and start treatment. Best decesion she ever made. She is still battling anxiety but she did go back and graduate and has a job she loves. She still suffers anxiety but is coping and improving. This is not the end of the world but a road bump. A serious one but one that can be recovered from.
Good luck.