Ay totoo yan, sis! Constipation during pregnancy talaga nakakatulong mag-trigger ng Braxton Hicks contractions especially pag sobrang strain mo, kaya normal lang pero super uncomfortable, been there sa 2nd pregnancy ko din at akala ko may problem na agad haha. A few of us moms tried increasing fiber more slowly (pati probiotics), drinking even more water, and ginagamit namin yung stool softeners na safe in pregnancy, pero honestly kung ganyan ka-struggle ka at masakit talaga, better check with your OB para ma-rule out kung walang iba at makapag-recommend sila ng tama na approach para sa iyo specifically. Lalo na kasi third pregnancy mo na, baka nag-relax nalang intestines mo hehe pero ayusin natin yan para comfortable ka!