J.N.
Most definately she could be teething. My little one received her first two teeth at three months old. Get some orajel and help her out. I found the little q-tips filled with the baby orajel worked best, along with cold wash cloths. My daughter got all her baby teeth in by 18 months old. Don't forget the tylenol too! You can also look for little white spots on her gums, rub your finger on her gums and if you feel anything rough, it's probably a tooth. Hope that helps!