Ay don't worry mamsh, one glass of pineapple juice is totally fine, a lot of us preggy moms drink it naman, kaya mo yan! Just go easy lang if you're drinking it regularly kasi medyo mataas ang sugar content, pero that single glass you had? Walang problema dyan, promise. If you're still worried though, always safe to ask your OB next check-up para peace of mind mo, pero honestly most of my preggy friends nag-enjoy ng pineapple juice the whole time and lahat okay lang ang babies nila.