Aw mama, yan ang ganap ko rin around 38 weeks, nakaka-anxious talaga waiting for labor signs! The tightening and pelvic pressure you're feeling could be Braxton-Hicks contractions or your body prepping, but honestly, I'd check with your OB ASAP para ma-confirm if everything's okay, lalo na since you're having pain, better to be sure, diba? A few of us mums did walking, prenatal yoga, at pag-usap lang sa belly to help, but your doctor can really guide you better on what's safe for your situation at kung may urgency ba talaga or you're just on baby time na. Hang in there, baby will come when ready!