I dont think its a big sign you are about to deliver. I am tiny so my abdomen gets filled up with baby pretty fast but I have had that since about 32 weeks.
Could be that you just haven't dropped yet. I did gradually over the course of the past few weeks, but drastically over the past few days. I'm 36.5 weeks and notice a huge improvement in breathing and tightness. But the pressure level is definitely taking some getting used to.
Probably u are wearing a tight filling cloths... It happens to me if my cloths are tight
Ive been feeling like that for a few weeks...its very miserable. I think it is a sign we are approaching the end. (: also, it might have to do with the fact the baby hasnt dropped yet, because mine has not. Im 38 weeks tmr and yesterday my baby was estimated at 8 lb.
Could be couldn't be I am 37 weeks 6 days I have felt like that too since 35 weeks his butt sits in between my ribs and his legs use the bottom of rib cage as a trampoline so I completely understand the idea of feeling out of room... at 35 weeks mine weighed in at 6 pounds... but hopefully it will be soon for the both of us :)