Uy mama, back pain in pregnancy is super common, pero since you're having pain specifically near your spine, please get checked by your OB or midwife soon, hindi worth the worry pag may specific area na nakasakit, okay? At 16 weeks, there's so much happening sa body mo, kaya better safe than sorry talaga. A few of us mums had back pain during pregnancy pero iba-iba ang cause, so kailangan talaga ng professional assessment para ma-ease ang mind mo. Sending love!