baby's growth-weekly updates

Jacqueline
So I'm currently 18 weeks today and loving my growing belly. There's something so special and crazy about not only the connection you have as a mother(because it's growing inside you), but the relationship with my husband and the baby. He gives so much love to something he has yet to feel or experience. It's truly amazing. 
Anyways, I wish there was a uterus growth chart haha. Something that said "This week your baby is a lemon, your placenta is a _______, & your uterus is ______. Haha. My belly isn't huge by any means, bigger than some of my gfs, smaller than others. So I always get so paranoid that I'm "showing too soon"...if that's even a thing, or gaining excessive weight in my belly area. 
Being my second pregnancy(first was a miscarriage) I get so caught up in the things I read and pictures I see. Does anyone else have or has had these thoughts????
By the way, love this community!