Not wanting to get excited

I've been talking to my mom and she agreed to let be get a breast reduction but I don't think she's going to follow through with it because she never does with anything and it makes me really upset because my breasts are starting to cause a lot of health problems like some days I can't even move because of all the back pain and end up crying for hours because my headaches are so bad and its so upsetting knowing I'm probably going to be dealing with this for at least 3 more years :( sorry I really needed to vent