My SO hasn't been very nice to me lately... barely speaks to me..and when he does he just bitches at me and calls me…

My SO hasn't been very nice to me lately... barely speaks to me..and when he does he just bitches at me and calls me names.. he hasn't held our daughter in days either... hurts my feelings... just feel like maybe he's cheating or has some other kind of relationship happening. just a feeling. ugh I dk .. breaks my heart.