Aww alam ko yan, super uncomfortable talaga yung feeling na yan, lalo na around 25 weeks when everything's getting heavier! That pulling sensation sa lower abdomen ay common, pero since you're really uncomfortable at hindi ka mapapakali, I'd really suggest checking with your OB just to be sure lahat's okay, could be ligament stretching, baby's position, or something else na kailangan lang i-monitor. A few of us mums experienced it din, and pag nag-reassure ang doctor it's normal, parang nag-ease off na yung anxiety mo, which helps a lot with the discomfort!