Help! "mom" problems

I know this is long but please help. My mom cousin help raise me my whole life but after my mom died it was all my grandma. Now I'm pregnant with my first baby and it's like I can't be excited about anything. I got to go in for an 3D ultrasound at 16 weeks. And I let her come and the doctor said it's okay 100% girl. And when we got out she said I didn't want to say anything but he is stupid and should no about his job it could change at 16 weeks. But it's 100% or money back. And then my auntie was like oh you're getting a little belly. And she had to comment well it's not really baby belly you don't get that till like 7 or 8 Months. I have lost 30 pounds. I don't know what else my growing belly could be. And then we were talking and I wa saying that because of my health problems I might go into labor a few weeks early but it's nothing to worry about and she was like well that doesn't sound right I want to go to one of your appointments. I wanted to say no that's for me and my husband. And I was showing her a list of stuff we need to get. Because I have watched mommy vlog after vlog to figure about what is a waste to buy and what's a life saver. And she was like well you need to go with me so you know what you really need. Like telling me that my kids will never use the crib. I just want to say to her I will parent different then you my child will like and dislike different things unlike your kids. Like me make my own mistakes. And stop comparing everything to you and how it happen to you and blah blah blah. She did the same for my wedding. "Well Ben and I waiting till we were 25 so we didn't have these problems" like when my dj canceled last minute like bitch you got married 7 months after you met. Please help what do I tell her?????