I would say no to the wheat grass because there is too much controversy surrounding it.
Are There Any Possible Problems or Complications?
Wheatgrass is generally considered safe. Wheatgrass should not be used to flush out the urinary tract if the patient has swelling caused by heart or kidney insufficiency. Women who are pregnant or breast-feeding should not use wheatgrass.
I think the coconut oil is safe ;however, do not over consume. If the mother consumes too much Fatty acids, it could have certain effects.
The experiment (around 1978) in which pregnant mice were given diets containing either coconut oil or unsaturated oil showed that brain development was superior in the young mice whose mothers ate coconut oil.