How do you know if your prone to get stretch marks? Since I’ve grown up some my boobs have got a little bigger and my butt has got huge! While they grew ive only seen very very tiny stretch marks on the side of my leg only on my right side, close to my butt. Does this mean I will have a lot of stretch marks when I get pregnant? I plan on drinking lots of water and lathering up on oils once I find out that I am.