Iam in my third trimester what will.the fetus be doing and will i have body changes?

Baby kicks/punches: The healthy baby will continue to kick/punches/moves, and likely starts to turn head-down if not done so. Baby may actually kick/punches a bit less because of less room. Your belly will get bigger and may sag a bit. Also, u may need to pee more often, and feel more short of breath, more reflux, back aches, and more uncomfortble laying on your back etc..If having problems, consult doc. Congrats!