Acting weird 😕🤔

Lately my so and I been going out of state frequently for his work, we might argue none to once the whole trip, he's going to Ohio tomorrow but I can't go because he's supposedly meeting a worker which HE ALWAYS DOES and that never stops him from taking me now it's all of a sudden a problem, I just lost my grandmother 7 days ago I've been pretty sad lately he doesn't seem to care he tells me I'm too Emotional, but that is my Tata ! But anyways he's been acting weird as fudge lately changes the password to his phone often like I knowww he is hiding some shit he block his notification from popping up on the home screen takes his phone everywhere bath room by his pillow under it but there is no sign that he is doing something bad but I always trust my gut feeling anyways I told his ass I come with you any other time then he hits me with "maybe a couple days apart would do us good" like bitch I'm sad as fuck I just don't know how to talk to him