Does Allegra Taken Along With Advil Have Any Side Effects ?

I realized that I had forgotten to take my Allegra and so I took one. A few minutes later (while calling out spelling words to one child, and pouring milk for another) I decided to take some Advil for a back ache that has been bothering me all day. In my distracted state, I am afraid that I may have grabbed the Allegera bottle rather than the Advil bottle and took two Allegra rather than the intended pain reliever. If I did indeed take three Allegra, is that something that I should be concerned about or should I just be more careful in the future. I am not sure that I did, it is just that the Allegra bottle is not where I put it the last time.