Pressure before and after urinating normal?

So I'm about 6-9 weeks pregnant and for the past few days I've felt that when I need to pee I feel my bladder full (obviously) but it feels like it's pushing up against everything making it hurt to relieve myself, and once it's done my bladder is, obviously, empty and it hurts for a few minutes afterwards (maybe because there's no more pressure and everything the bladder was pushing up against is settling back into place?) I'm not sure if this is normal or what I'm exactly feeling... Does anyone else know what I'm talking about?? --Thanks--