Hey mama, congrats sa buntis! Yung mild cramping sa first trimester ay pretty normal talaga, a lot of us mommies experience that, parang ang ligaments mo kasi are stretching and adjusting pa lang, kaya tolerable na sakit is usually okay. But since you're noticing it's changed (more frequent before, now parang may nakablock feeling), best to mention it sa OB mo sa next checkup para peace of mind lang, hindi bad thing, mas better safe than sorry especially at 12 weeks pa lang kayo! Wala nang spotting or anything serious, so that's good na, pero your doctor can confirm everything's on track and why the sensation changed. Relax lang muna, maraming kami na nag-experience ng ganto at okay naman!