Hello, My Daughter, Who Is 23, Was Diagnosed With Lyme

Hello,
My daughter, who is 23, was diagnosed with Lyme Disease about 1 1/2 months ago. She was allergic to the first antibiotic, so her doctor put her on amoxicillin for 30 days, 3 times a day. She developed a yeast infection and was prescribed fluconazole. After taking just one pill, she developed severe stomach pain about 45-60 minutes later along with diarrhea. She went to the ER and was given IV and the medication was stopped. She was doing well the past few days but now has the severe stomach pain again, along with dizziness, pressure in the back of her neck and she feels unusually bloated. She has a 2:30 appt. with her regular doctor. Should I take her to the ER instead? Do you know what this might be? Thank you very much.