My Daughter Has Been Having Symptoms That Come And Go

My daughter has been having symptoms that come and go during the day, most days lately for several weeks: pain at the back center of her neck, headache, nausea, and tiredness. She did have a doctor's appointment today, and lab tests were done, but results will not be available for days. I am just wondering what the possibilities may be. She went camping in Washington state in June, and discovered a target-shaped rash on her two year old's thigh the day they returned which was diagnosed as Lyme disease. The child had a three week course of antibiotic and never developed symptoms. However, her physicians said that she was lucky to have developed the tell-tale rash because only 3% of those infected do and so get the antibiotic treatment when it is most effective. My daughter, her mother, was never tested , until now, for Lyme's, so she is anxious about this. What do her symptoms indicate, and what can be ruled out? Thank you.