Losing soreness in breasts

Hi ladies, need help..

I started off with breast soreness earlier this week but it has slowly faded.. I am 12dpo today. My test line is getting darker but worried if this will again end up in a chemical :(.. the last one is from today any thoughts?

Update: 5 weeks 5 days now. You ladies were right about symptoms coming and going. Breasts feel fuller but soreness comes and goes. I was diagnosed with irregular gestational sac at 4 weeks, have another scan in 4 days...praying hard that everything is fine 🙏🏽