Breast size decreased at 6 weeks?

I’m 6 + 4 today. We went on the 26th and had an early sono and saw a heart beat. My breasts were becoming more full and had definitely grown. Over the past few days they’ve become less sore which I figured could be normal, but now are back to regular size (husband agrees). Have any of you ladies experienced breast size decreasing around this time and everything turned out to be okay? We had a miscarriage last month so I’m definitely paranoid, but this is how I knew something was wrong last time. Thanks for the advice ladies