For 7 days you have been away from food, so now you are in an excellent situation to figure all of your dietary triggers.
If apples used to burn your lips, avoid apples.
Burning lips is an oral allergy symptom, it is how your body tells you you are allergic to something.
People allergic to apples are often allergic to pollens.
During autumn there is significantly less pollen than during summer, another sign that pollen might be your problem, and with pollen, many fruits, as there is a lot of pollen on fruits, even after you wash it.
You should break your fast with vegetable, or fresh vegetable juices, and try to test fruits later when you already know what vegetables you can tolerate.
Stay away from nightshades, they are like fruits, eczema triggers (tomatoes, peppers).