Depende sa kung anong shake, mama! Kung homemade shakes with fruits, yogurt, and milk, okay lang yan, actually nakaka-help pa para sa nutrition. But kung yung processed ones or may raw eggs, better avoid muna, at pwedeng may hidden ingredients na hindi safe sa pregnancy, so best to check with your OB kung specific brand ang gusto mo, especially ngayon pa lang kayo sa 6 weeks pa.