Family again arrrghhhh?

I called my mum the other day and she said we need to talk about my sisters bday I was angry because my mum has never bothered with my bday and 4 graduation didnt make a fuss or throw a party like she said to all the fam I txt her and said I dnt want to no about my sisters bday cause she always convieniently 4gets mine I no I am kinda punishing my sister 2 but I am resentful should I feel like this?or blowing this outta proportion?