How do I convince my daughter to go back to school after having 2 severe illnesses?

[Sugar]

My daughter is 7 years old and is in Grade 2. She has been in school systems since she was 3. She has ALWAYS loved school. She is an A student and barely misses any days from school. Her Grade 1 year she only missed 3 days that whole year. But this year she has become very ill. She started with regular colds in September that she didn't take time off of school for, but 2 weeks before Christmas she caught a gastro flu and she ended up in the ER after a week of the illness going away. She was fine after that and went back to school. She made it through the Christmas holidays with nothig, but she became sick after only one week back to school. This time she had a respitory illness (most likely H2N3?). She had a very high fever and 3 different docs at a clinic didn't want to give her antibiotics. They did xrays, but the doctor couldn't see the white spot that I seen on her lung. I brought her back 2 days later to be told that a radiologist looked at the xray and diagnosed pneumonia and ear infection. She missed nearly 2 weeks of school. I brought her back this past Monday, she came home crying that there are sick kids still in class and she frightened that she is going to catch something else. I feel the same, but I try play down that she will catch anything else. I can't blame her for being so scared, but today she fought me all the way to the school and the secretary and to drag her to class. Never in 4 years have I seen her so upset. She won't eat her lunch and snack for her anxiety is so high that she can't eat. I don't know what to do to calm her, I seriously have tried everything. Is there more to this than just scared of flu's? Does my child suffer with anxiety. I know her father's mother had/has severe anxiety. She is scared to leave the house. Is it genetic? My daughter is begging me not to take her to school tomorrow and give a day of rest at home. I know she has fully not recovered from the pneumonia, but I believe is will enough to go to school. Than she told me she just simply "hates school". This is so not like my daughter, she loves school. I want to keep her home tomorrow, but I'm afraid now that the school knows that she is feeling like this that they may just call children's aid thinking that something must be going on at home. I want to get into see her doctor but it takes a week for in. What can I do for her? Does she need therapy for her fears? Please help!