Ear infection?

So I've recently broke my 1 year old to her own bed. She's been doing wonderfully invite, except for the past 3 nights. She's been waking up constantly, screaming. I thought her teething was bother her so I've been treating that.

I also noticed that she has been sticking her finger in her ear, along with trying to stick other things in her ear. She has trouble with ear infections, and I have a hard time guessing when it might be an ear infection so I bought one of those things that the ped uses to look in her ears. Her one ear looks perfect, but the other she will not let me mess with at all. Is it possible that it could be an ear infection? Would you take her in if it were you?