I really don't know what's wrong with Daisy :( she didn't sleep very well last night and she's been…

I really don't know what's wrong with Daisy :( she didn't sleep very well last night and she's been very fussy today and won't sleep for longer than 15 minuets... She isn't really crying much but making a lot of frustration noises and she was asking for her bottle but it was a struggle to get her to take 30ml :( she just kept making the frustrating noises and shaking her head to get away from the bottle :/ could she just be over tired?