High risk with a helicopter grandmother

Layli • I am 21, my SO is a wildland firefighter, we are pregnant with baby #1 and I have 2 gorgeous step kids. I have stage 4 endometriosis and PCOS.

I have severe Endometriosis, PCOS, Ehlers Danlos, and I'm pregnant. I was told I have hyperemesis gravidarum or HG. On top of all the other risk factors this makes me extremely high risk.

I was told to avoid all stress including going back to work. Well my grandmother, who I have spent most of my life with, seems to believe she is exempt from the no stress rule and is continuing to call me, text me, call my friends, call my boyfriend, call my old place of work, and drive by where we are staying in person to yell at me about every little thing. She thinks she knows best but she has always had to be in control of my entire life. She doesn't have any control and she is freaking out.

How do I make her see that what she is doing is wrong? I am scared to even leave my house or answer my phone anymore because of her. I had a panic attack going to a lunch meeting with her. The stress is affecting my body in very negative ways but she doesn't believe that the doctor told me no stress because she was not in the room herself.