Uy mama, para sa ganitong tanong about what's safe during pregnancy, kailangan mo talaga makipag-consult sa OB mo, libo-libong herbal things ang ginagamit natin dito sa bahay, pero ang bawat pregnancy ay different, kaya mas safe na marinig directly from your doctor kung okay ang oregano for your situation. Ang ubo during pregnancy is really annoying, I know, a few of us mums have been through that, at marami kaming na-try, pero palagi naming sinasabi sa isa't isa na always check with the doctor first before trying anything, even "simple" things like oregano. Better safe than sorry, di ba?