Uy first time mom, congrats! At 36 weeks, it's actually super normal na bababa na ang tyan mo, yung baby ay nag-eengage na sa pelvis in preparation for labor, kaya parang napapababa mo na talaga ang bump. A few of us moms noticed the same thing around this time, parang nawala yung "high" pregnancy belly and it moved down na, which is a good sign na preparing na ang body mo! Just keep an eye on your movements and if anything feels off, laban sa OB mo agad, pero most likely normal lang yan, mama. You're almost there na!