Alamak, mmg normal lah during third trimester! Loya and gas are super common around 34 weeks sebab baby dah besar and pushing on everything, plus hormones make your digestion slower. A few of my mum friends complained about the same thing, one even said she'd wake up with gas rising up to her throat which was so uncomfortable. Try eating smaller meals, avoid spicy/oily food, and minum plenty of water ye. But if the loya is severe, tenesmus teruk, or you're having other symptoms, better check with your doctor just to be safe lah.