Anyone else been in a situation like this?

So I’ve been smoking weed a bit to help with nausea my whole pregnancy, it’s the only thing that’s helped me keep food down, if I don’t I’ll be throwing up all day usually..but I’m now 37 weeks and I’m nervous about how it’ll be at the hospital even tho it’s legal in my country. I don’t want cas involved. My obgyn knows I smoke due to not being able to keep anything down without it but I’m still really nervous how the hospitals gonna be? Anyone else been in a situation like this?