Kaylee won't sleep and it's driving me insane!

For the past 2 days, Kaylee's naps have been nonexistant! She slept today for 20 minutes (2 intervals of 10 minutes). I know she's exhausted. I have tried putting her in her crib and letting her cry, I have tried holding her, I have tried making her fall asleep in the car, running in the stroller with her...all of which have failed! I don't know what's wrong with the poor girl. She feel asleep in the highchair today. It only lasted for 10 minutes until Clay came through the door and she immediately woke up. I wasn't going to move her from the chair until she woke up. I tried to put her back down, but it didn't end in success. She was hyper to play again so I tried the jumparoo(usually the jumparoo will wear her out enough and allow for her to be put down)...no success! Her eating habits have changed as well. She was eating between 1 - 2 jars of baby food at every meal (3 times per day). The past two days she's only eaten 1/2 jar - 1 jar and I am lucky if I can get that without tricking her and shoving the food in her mouth when she opens it to cry! I think it could be teeth...but I don't see anything. She doesn't have a fever...she's not sick. She's tired. I'm tired. Ahhh...what do I do!?!