Ay congrats, mama! That fluttering sensation you're feeling could be quickening, baby's movements na nagsisimula around this time, though some moms feel it earlier or later pa depending sa position ng baby at ng placenta. Since it's on one side lang, baka yan talaga ang sweet spot kung nasaan ang baby mo ngayon, pero since ito na ang first time mo, mas okay na i-check mo with your OB para ma-rule out any concerns at ma-confirm na lahat ay okay, okay lang yan para sa peace of mind mo!