Ay anak, this is definitely something na kailangan mo i-discuss with your OB right away, ha! Low-lying placenta ay importante i-monitor, so please don't worry, just make sure your doctor checks on this sa next ultrasound mo, especially since you're already at 27 weeks. Maraming moms sa group namin had this same concern, and honestly, ang best reassurance talaga ay galing sa doctor, he/she can see kung ano talaga ang nangyayari with yours and what to expect. Para sa peace of mind mo, try to stay relaxed and follow whatever precautions your OB recommends, okay? Take care ng sarili mo, at i-update mo kami kung anong sabi ng doctor!