purely am sad

Just had a bad quarrel with him. We were so fine talking on the phone initially
He told me that he won't be spending christmas (i think new year also) with me cos he gonna work :(
I'm so looking forward to spend this day with him, not cos its christmas but also cos he hardly can spend his whole day with me.
When he told me this, my first reaction was of cos SAD rite... so didn't talk much to him and my tone was really sad. I admit i'm quite pissed off but i'm not angry cos he need to work and dun wanna spend his christmas with me. I'm just couldn't react to this last min change. I'm purely just SAD.
He completely assumed that i'm not understanding. Not being able to understand that he got to work. and thats how the quarrel starts. BUT i seriously understand!!
Baby,
why your first thought is always i being not understanding? Can't i have the right to feel sad and let me angry for that few minutes? Do i always need to give in and end up apologising to you instead?
Why is it always like that, you want me to understand you, but how about me. I'm sicked of all these endless quarrels that repeat every now and then, so often already.
Do i still have the determination to continue...................................