Konting wiwi output

I have a 5 month old baby girl, and recently napansin ko na konti lang wiwi nya unlike her earlier months. Nung isang araw, after 8 hours na magdamag, nung papalitan ko na siya diaper walang wiwi So far, hindi naman siya fussy, or iyakin, is there something to be worried? Or ano pa need ko iobserve?