Ay normal lang yan, mommy! Those are Braxton-Hicks contractions na common talaga pag malapit na, lalo na at 36 weeks ka na, kaya hindi ka mag-alala. A few of us moms namin same experience, one friend said her belly was hardening every few minutes pero normal delivery pa rin siya eventually, so wag mag-stress kasi yan din nakakaset ng baby sa position. Since wala kang discharge or bleeding at pakiramdam mo okay lang, basta mon-monitor mo pa rin and if malalaki ang frequency or mag-start ng bleeding, go see your OB agad para sure na everything's fine.