A.C.
Oh...I remember that! Mine only lasted a couple of months early in my pregnancy, but I feel your pain. I would take a Tylenol on those days when I just couldn't deal with it, but alternating warm and cool packs were my main remedy of choice.
I also slept in a stretchy "sleep" bra to give some extra support--I was a D when I got pregnant and they rapidly expanded beyond that. I double layered sports bras during the days when I was going to be especially active--Champion (and I am sure others) have one with a knitted band instead of elastic in a casing which I find less binding. I got mine at Target for around $15.