Feeling lonely and ignored

So for the past month or so I feel like my bf is being distant...I feel ignored and alone we don't do very much together anymore even if I'm sitting next to him in the same room I feel like I don't exist...I feel like Facebook and snapchat gets more attention than I do considering the fact that he's like obsessed with it...I've tried telling him how I feel and asked him for attention and affection and that gets me no where but according to him it's me who makes myself feel this way that there's something wrong with me and all its been is just us fighting idk if this is just me feeling this way because I'm pregnant or if there is a problem