Aw, first time mommy pa lang, normal lang yan, dear, marami sa amin nag-experience ng pain sa pwet especially as pregnancy progresses kaya hindi ka nag-iisa! Pero yung combination ng butt pain, hardened tummy, at concern mo about movement, mas maganda check mo na lang with your OB para sure na lahat okay lang at walang complications, especially since nag-aalala ka na at limited ang movement mo. A few of us had Braxton Hicks (practice contractions) na parang iniwan-iwanan ng pera, and once na-confirm ng doctor na normal lang, nakadacan na kami ng peace of mind, kaya don't hesitate to call or visit your clinic ha! Keep safe, mommy!