Mother in law drama

My mother in law keeps insisting on baby sitting my child but I don’t care for her at all I jus try to be nice ! She’s saying she is getting an air mattress to stay with us and our baby but I DONT WANT HER HERE ! She tells me how to eat, clean,drink, and etc ! She also told me I can’t have cranberry juice but turn around and offered me a zany saying it won’t hurt the baby you’ll be ok ! I told her NO tf I look like popping pills while pregnant! She is very overprotective of her son and annoying! I’m concerned once I have my baby she is going to try to micro manage me with my child ! So far I’m not enjoying my pregnancy and if she’s around I won’t enjoy my baby ! What should I do ???