My mom doesn’t make sense

So for 2 months she been sayin she gona buy my unborn son this and that and not to buy it but I’m due in 3 weeks and she keeps giving half her paycheck to her boyfriend so when I tell her not to worry about it she gets mad honestly if she really wanted to get him something she would have a long time ago but I guess her boyfriend means more to her than her first grandchild I’m not mad or anything I just hate when people say they gona get something and don’t