Suggest Treatment For Fever Despite Taking Fevadol

Hello, my 2.4 years daughter is cutting her premolars so was complaining about pain in ear and had fever too with runny nose, I gave her fevadol but yesterday morning she had 102.7 F temperature and her body started jerking (fits) so I gave her gevadol and brought her to doctor. At hospital she wasn’t having fever because if fevadol but after listening the whole situation, doctor recemmended blood test for calcium, potassium, magnesium and iron All the reports are ok and she asked me to continue fevadol. Now the problem is she has been suffering from fever and flue since yesterday afternoon. I am worried about her that can drawing 4 vials of blood be problematic? and why temperature is not getting normal? Thank you