No breasts tenderness, no real symptoms at all actually.

So this is my second pregnancy and already there are some differences.  With my first by this stage (I'm 6 weeks pregnant) I was already feeling breast tenderness and they grew.  This time around, I have a little tenderness?  I guess.  It's so minor it barely bothers me.  Whereas with my first pregnancy even when the shower water hit me it hurt.  Now I am still breastfeeding my toddler.  So could that be why?  Since my body is still producing milk.  Anyway, I hope I don't jinx myself but so far I'm feeling normal.  I'm anxiously awaiting my first ultrasound appointment because at this point I gotta see it to believe it.