Lynsdey, don't be worried my love! It is just something that happens to some people during pregnancy! There is nothing you can do to prevent it, if it is meant to happen to you! Same as with stretch marks! If you're skin is meant to have them you will!
Mine popped out at 14-16 weeks with my DD and again with this pregnancy at around 12 weeks. Embrace it, it looks cute when you have a big bump and you can see your belly button through your top!
x