Mil irrates me

My mother in law wasn't around since we were 16 til 18 cuz my husband was in foster care, so when we started talking to her again it was when I became pregnant I was 4month when we told everyone she hadn't talked to us for 2years so we told her last and she freaked out saying how wrong I am for telling my mom first and saying how that's her baby. Well then as we found out the gender I told everyone that his room would be animals and the forest and that his play area would be the sea, well she got mad and said that she refuses to do animals and that it'll be dinosaurs, I pushed it off cuz whatever it's my house I'll decorate he's room myself. Well let's fast forward to a week before I would be induced she told me that my mom wasn't allowed in the room and that she would be but I told her no it's still cobid only your son can be there Well she threw a fit and said that she would come to the hospital and yell till she got in, I told My husband I didn't want that so he told her to leave it and so she was all pissy, she called every ten minutes I was in labor asking if her baby had been born. No that my son if 5mintjs old we take him to the store but I can't drive so she drives us, we'll it sets me off and I yelled at her for it because everytime someone ask me a question or says how cute he is she won't let me answer she always give the answer and is like he looks like me, I yelled about it and she got pissed and said he's hers. Well the other day I told her I have rules cuz she gave my 5month old baby ice cream and was talking badly about his dad her son to my son. So I told her that I have rules and that if she can't follow them then I was gonna leave with my son well she freaked out attacked me and told my husband I was a bitch and to never bring me around her. Well now she ask if she can have my son for the night I told her no because she has drugs friend she drinks her husband Is an alcoholic and she doesn't follow my rules am I wrong for telling her no and yelling at her