Why I'm I always being left out?

Basically I'm 15 and my mums not a bad mum or anything trust me but basically she's took my family out to a restaurant I mean all off them even one person who's not in out family but me and she told them not to tell me and plus she took them out on a trip apart from my sis who was already having fun and left me out I wasn't allowed to come and she's taken all off her kids to her work and not me i honestly feel like I ayntt her Kidd she not a bad mum she's brought me a iphone and stuff but I honestly feel like she wants nothing to do with me i just feel like crying and I can't talk to her about this cuhss I ayntt good about talked about my feelings

Don't cry. I'm 14 and sometimes feel like i'm left out but just know that your parents love you and there may be a reason why she didn't want you there. Maybe they're planning a surprise.

Thats sounds weird, maybe you were too youngand they were older? That could be why, its ok to ask her.