Glaucoma symptoms worsen with pressure against neck?

I have had cloudy vision for the last six months. I am 27. Opthamologist says I have enlarged optic discs, so it could be the beginning of glaucoma. My IOP is normal. I have noticed the cloudiness and blurriness gets significantly worse after I have been laying on the couch with my head and neck propped on the arm of the couch, or laying on the bed with my head and neck propped up on a folded pillow. Is this normal for someone with glaucoma to experience vision changes as a result of body position or restricted blood flow to the head?

Thanks.

Shauna