How far along: 20 weeks (technically, 20 weeks and 3 days today) How big is the baby: Our baby weighs about 10 1/2 ounces now. She’s around 6 1/2 inches long from head to bottom and about 10 inches from head to heel. Or, if you like to think of babies as fruits…she’s a cantaloupe.  Total weight gain: The last time I reported my weight gain was at 18 weeks and I hadn’t gained any weight since my 16 week appointment. For the past two weeks, my weight has been fluctuating between 1-2 lbs. On Wednesday (my official 20 week mark), I was up just over a pound and a half....