Uy, mama, first things first, if the pain hasn't improved kahit after 2 weeks ng rest at gamot, kailangan mo talaga bumalik sa OB mo agad, lalo na with twins. Hindi ko matutukoy kung ano talaga yan online, at you deserve proper monitoring ngayon.
A few of my mum friends with low-lying placenta din nag-experience ng ganyan, at important talaga na in-check regularly kasi bawat pregnancy ay different, especially yours with two babies. Bedrest helps pero hindi rin dapat masyado kang mag-alala, OB mo ang best judge kung kailangan mo ng full bedrest or modified lang. Just go back to your doctor soon, okay? You're doing great, mama, just need the right support from your medical team.