Hi maggie,
I would say it is probably normal, going by my own experience,
I am just three weeks post op myself and things have been changing all the time,
I think your likley to have one soften quicker than the other possibly to do with being left or right handed.
Also where i was getting pain and discomfort to start with(more in the sides of my boobs)that has stoped but its in other area’s now.(More in the centre)
I really think having unders your muscles take a bit of a battering in surgery, and will take a while to settle down and relax.
Mine have softened alot but still what i consider to hard . But it is only three weeks, and i hear girls on here talking months !
I have realised through my own that it is important to still take things very carefuly and i’m not very good at that.
If your really worried though hun give the nurse a ring XXXX