Ay oo, normal yan sa late pregnancy lalo na malapit na sa due date, ang uterus mo nagsisimula nang mag-prepare for labor kaya ganyang-ganya ang digestive system mo, nangyari din sa akin at sa ilang mum friends ko! Three days na ganyan is a bit long though, so better check with your OB to make sure it's just the usual pregnancy thing at hindi something else, lalo na kung may cramping or iba pang symptoms, they can give you safe options to drink or eat na okay for 35 weeks.