My Wife And I Are Alternating Meds, Tylenol And Ibprofrin,

My wife and I are alternating meds, tylenol and ibprofrin, to combat my 2 years old's fever. She was diagnised with a uti today. I think I just mixed the two bottles up and gave two doses of ibprofrin in a row. Two hours apart. Is that horrible? Is she going to be ok?
We've had a very long day at the doctor's, everyone just went to bed. What do I do?