Feeling defeated

I feel as if my toddler can never catch a break . She often gets random fevers or has allergies or lately uti and now she has diarrhea / upset stomach . She’s pooping often in small amounts I’ve already changed abt 3 diapers in the span of maybe 1.5 hours . I just feel like I’m failing some times . I know kids get sick and everything but I feel like she’s just always going through something . I just wish she could catch a break . Just needed to vent for a bit