Hindi naman forbidden ang pineapple juice during pregnancy, pero okay lang i-enjoy mo siya in moderation, some of us preggy moms drank it the whole time, walang problema naman, pero iba-iba talaga ang bodies. Since you're already 30 weeks, you're safe to drink it, pero seryoso na lang, mas better kung itanong mo sa OB mo kung may specific concerns siya based sa your pregnancy, lalo na if may conditions ka o something, better safe than sorry, diba?