Ah iyong Braxton Hicks yan most likely, feeling ko, marami sa amin nag-experience nito around 38 weeks, parang tightening na hindi painful tapos nawala na lang after a few minutes. But if the tightening is regular na parang every 5-10 minutes and may actual cramping or bleeding, or kung feeling mo talaga na iba na siya, best call your OB agad para ma-check mo lang and get peace of mind, mas ok na alam mo exactly what's happening, diba?