exhausted

De
Baby girl is 11 weeks now and this week has been exhausting. She just cries and cries. Even after clean diaper and properly fed she wont play, maybe for about 5 min she will play then back to crying. I think shd is teething because she is drooling a lot and hand in mouth. What can i do to soothe her? U tried giving her nuby teething toy but she didn't like it.