Ay, mama, if you're feeling like baby is really low and you're having difficulty moving around, please call your OB or go to your hospital ngayon na, don't wait, especially at 33+ weeks. Better safe than sorry, diba? A few of us moms felt similar heaviness later in pregnancy, but every case is different, so your doctor needs to check you right away to make sure everything's okay with baby's position and your health. Huwag mag-atubili, mama, that's what they're there for. Sending you love, and I hope you get checked immediately!