I need to vent

Wanda • blessed to have my little family💘 I love my husband and baby boy 💗I won`t change them for the world 🌎
 I'm sorry but yesterday my husband 16 year old sister asked me if I was goin to breast feed I told her idk because is up to my body and baby if he latches on quickly you know ? And she said why maybe ? I said cause in school i will have to pump and all this is too much ! And she said well that's a lame ass excuse you should of thought about it before getting pregnant 
I got so mad I told her look I think I'm old enough to know how to take care of my child when you have a child you won't like to hear this stuff so why don't you make me a favour and back of my business if i Breast feed or not is up to me and him I will try my best but if I can't oh well ! I am so mad when she think she knows more than me like oh come on you don't even have a child