Ugh thanks guys so much I appreciate it
It all depends on the position of your baby too :) my mom who a really really large woman said at 6 months she woke up one morning (with my brother) and he had rolled over and she had her "fat" belly with a Prego belly ball lmbo her words not mine.
Being as small as you are at 120, you will more then likely get a tight belly but.its hard to say when. I was 110 before getting Prego with my first and didn't start even looking pregnant til around 5 months.
I have a gut and my belly is hard at 23 weeks and has been for awhile. It will just take some time, everyone is different
My actual weight use to be 120 but I always had a Lilo gut that's y I was just wondering , but thanks anyways
Your stomach probably won't be hard until after 30 weeks hun, and if you are a bit bigger it may not really look like a preggo belly until the very end.