Fussy baby and feeding?

Spec
If I've not long fed and changed my baby and she's still being fussy should I feed her again?
I've been told yes because it's comforting and that's what she really needs and that you can't over feed a breastfed baby. 
I've also been told no because it causes bad habits. 
I really don't want to introduce a pacifier because I'm still finding feeding somewhat painful and my lactation consultant said to avoid it. 
Bubs is 5 weeks old, I'm not sure if that makes a difference. 
Thanks

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