I am a glaucoma suspect. Elevated pressure of 24 hgmm. Planning for pregnancy in 3 months. Do you think I get glaucoma while pregnant.

Not likely. I assume you are seeing an ophthalmologist and have been tested for visual field, pachymetry and disc contour and color. These are slowly evolving items (pachymetry is constant). Pregnancy is not related to glaucoma and I would image there are a few cases of advancement from suspicion of glaucoma to actual glaucoma during pregnancy. But this must be really rare, so go for the pregnancy.