I’m not sure. Is it different from the feeling of a full bladder (which for me can be uncomfortable)? I’ve experienced thinking you’ve emptied your bladder but then having to go again really quickly afterwards. It means you aren’t emptying your bladder, even though you wee out as much as you can.
If you go to your GP, they will refer you to a continence advisor. They will check how much urine you’re retaining with an ultrasound scan. They will then teach you to self-catheterise, to empty your bladder fully after you’ve tried to empty it the normal way. Self-catheterising sounds bad but is actually OK and, at least in my experience, much better than really frequent trips to the loo and accidents. The GP may also give you medicine to reduce bladder sensitivity.
I’ve said on here several times (so sorry if you’ve read it before), I had bladder problems of the kind you’re describing for 4 or 5 years but now my bladder is just like a normal person’s bladder. So this may disappear for you sometime in the near future or sometime in the distant future. Worth getting help if it doesn’t get better on it’s own very soon, though.