Aww that's so exciting! Parang sa akin din yan noong around that time, ang doc ko naman sabi baka ligament stretching or Braxton Hicks na (though mas early pa yon), pero honestly best to mention it sa OB mo next checkup para ma-confirm lang na lahat normal. The hardening parts you're feeling could be just your uterus adjusting, pero let your doctor check to be sure, peace of mind lang talaga, kaya go ahead and ask during your next visit! A few of us mums swear yung early quickenings and weird sensations ay part ng journey, pero bawat pregnancy different din, so better safe than sorry na lang.