My breast never felt full or hurt, my nipples hurt but not all the time. So I wouldn't worry.
Your breast and the tenderness have nothing to do with you miscarriaging. I never heard that before. I am 11 weeks and when i was 5 they hurt So bad than at 7 weeks it stop now again they hurt. It all depends
Don't worry
That doesn't mean that! Symptoms come and go...that happened to me I had a bunch of symptoms and then all of a sudden for like 2 weeks straight I had none and then would have some for a couple days and it would go away...I am now 15 weeks and my only symptom other than no period is the intense cravings. With my first pregnancy I misscaried and I never lost my symptoms until after the babies (it was twins) passed. My doctor told me that was noreal because my body still Thot I was pregnant even though the babies weren't alive. And through the entire pregnancy so far my boobs have yet to be sore. I do have a bigger chest than most so I always just Thot that was the reason. Everyone is different tho so even if that has happened to someone else and they miscarried doesn't mean it will happen to you
Don't worry they just don't feel sore from time to time nothing to be alarmed it's completely normal