My Daughter's Tummy Hurts A Lot She's Been Complaining On

My daughter's tummy hurts a lot she's been complaining on and off since last night I gave her Tylenol 2hours ago. She has no other symptom like diarrhea fever or black stool nothing. I'm unsure on what to do . she wants me to take her to the doctors but I think she looks fine just a little frustrated with the tummy ache. Should I take her how can I tell if it's that serious??