Relationship help

Getting mad at my boyfriend at the dumbest stuff. Idk if it's hormones or the stress of my moving and then getting a full time job after working only part time. I just can't help but get mad. Like today I got upset cuz he forget I work today even tho I told him several times and sent him a picture of my schedule. I remember his generally all the time. My attitude is taking a tole on us. I can't help it tho. I try to stay calm but I can't. And after I apologize for my neurotic bitchiness I just get a "sorry. I gtg. I love you" idek why that hurt my feelings. I kinda deserved it after what I put him through.  Any advice ladies?