I’m only 8+6 and mine have begun to feel less sore too
The pain and soreness will fluctuate throughout the rest of the pregnancy. Try not to get too hung up on it, I know it’s tricky and I’ve suffered loss too so I totally empathise. But enjoy a little relief because pain will come in waves the bigger they get. I remember with my first baby mine were SO sore around 16 weeks or so I thought it was abnormal pain. My boobs this time round have also not grown much regardless of pain I’m now 12+4 and last pregnancy I’d gained a cup size by now!! Your body will react differently at separate stages! Sorry for long message :)
I’m 10 weeks also. My boobs hurt less. I’m not worried. Things should be easing not getting worse