Yall...I don't wanna rain on yalls parade, but I used cocoa butter since I found out I was preggy. I hate stretch marks!! I use it religiously but, in spite of all my rubbing, I got my first stretch marks when I was 30 weeks. From then on, they grow like wild fire!!
I'm an estitician (i deal with disorders of the skin) and stretch marks are not preventable. You can reduce the appearance by continuing to lubricate and hydrate your skin. I was petite when I got preggy and thought I was the luckiest person in the world cuz I was 30 weeks and had a beautiful belly. Now it looks like a wild animal attacked me! Lol..
Having a career in the skin field doesn't help!! The best thing you can do is drink lots and lots of water!!!!! I splurge sometimes on fruit juice, it's the baby talking, not me!! Lol
about the belly button, mine started to poke out at about 20 weeks. Some people's do and some people's don't...Ya know??
Good .Luck yall!!
Sarah