Pickle-ish

I'm feeling very pickle-ish.
I've been this way all day!
And I'm not sure exactly what
Has made me feel this way!

I started fine, but now I'm green
And just a little lumpy.
And all the briny saltiness
Has made me extra grumpy.

I once was sweet, but now I'm sour.
It makes me rather ill.
Oh why must I be pickle-ish?
Come on now, what's the dill?