Aww sis, I get why you're worried kasi first time mo yan! Honestly, ligament pain and pelvic pressure are super common sa second and third trimester, bawat pregnancy is different talaga, kaya hindi mo na-experience before doesn't mean something's wrong, but definitely worth mentioning sa OB mo sa next checkup, lalo na kung tumatagal or tumataas ang sakit. In the meantime, pag naglalakad ka, try to take it slower and rest more, at kung kaya mo mag-maternity belt or support garment, tumutulong talaga yan sa akin. Pero huwag mo lang i-assume na "normal lang" lang without checking with your doctor, better safe than sorry, lalo na ngayon na tatlong buwan pa lang before due date mo!