okay I need to vent . I have been so aggravated over the fact my so called family has not been there…

okay I need to vent . I have been so aggravated over the fact my so called family has not been there for my other two kids birth at all. the don't call or text just to check up on me and my unborn or even the ones I have but I'm suppose to come to there house all the time I ask my sister to watch my 3 year old so I can go to an orientation for a job and supposly she had to work come to find out she didn't have to work. am I over reacting or do I have a reason to be mad on top of all of this they favorite my kids