Ay ganyan talaga ka-intense ang acid reflux sa pregnancy, lalo na sa third trimester! A few of us in our group had the same thing, sobrang uncomfortable talaga, and the dizziness makes it so much worse. Definitely check with your OB agad though, kasi sometimes ang combination ng heartburn at severe dizziness can mean something needs attention, especially at 27 weeks. In the meantime, try eating smaller meals, avoid lying down right after eating, and stay hydrated, helped my friend a lot. Sending you strength, mama, it's tough but you're almost there!