I had so much discharge in my third trimester too, especially on days when I was more active around the house, so you're definitely not alone. The pale yellow sticky discharge is pretty normal at that stage, but since it's happening in bigger amounts and you're worried about it, might be good to bring it up at your next antenatal appointment or call your PD just to put your mind at ease. They can check if everything's fine and give you peace of mind, especially since you're fretting about it. In the meantime, wearing a panty liner on those days you're more active can help you feel more comfortable and less anxious about the discharge.
Ya,im in 3rd trimester and seeing the same thing. Like a little glob of yellow discharge whenever I wipe. Doesn't smell or anything, just there.