I'm 3 weeks + my boobs they have been sore since when i spoke to my big sister about it who is about to give birth she sad it normal.
This is my first. I'm 8wks now but at 6 wks mine felt heavy and sore. I noticed some stretch marks the other day - I've never had any on my boobs before.
Im 5 weeks and my breasts feel much heavier and very tender so I feel your pain. After having a m/c I'll take all of the symptoms I can get. Just lets me know things are progressing.