baby & flu

my 8 month old was just  diagnosed with the flu, she’s in terrible pain and her fever is 101.2 , the doctor completely blew it off and said it’s whatever, just give her motrin and all that. he completely acted like it’s an everyday thing and said “she’ll get over it” . i’m a first time mom, a young mom and i don’t have anybody. no family to ask questions or get advice from. it’s just me. so i was just wondering if he’s right or if i should be worried and get a second opinion?