Sick baby 😢

Br
My poor baby girl is sick :( She has been fussier than normal the past few days and then this morning she had more than her usual amount of dirty diapers and wouldn't sleep for more than 20mins at a time so I took her to the doctor and she was running a fever (I've checked her temp a million times at home and it never showed a fever! I think my thermometer is off ) The doctor said he thinks she has a stomach bug and that she'll just have to fight it out. He suggested pedialyte but she won't take it because she's EBF and won't take a bottle... Having a sick baby is the worst feeling ever! I feel like such a bad mom 😢 Any suggestions on how to get her to take a bottle?? Or anything else that might help her feel better? I'm a FTM and any help is appreciated!