Stretch marks😑

So I have these stretch marks on the bottom of my stomach. Like between my belly button and my vagina. And I looked it up and it says they happen to pregnant women. And now I'm worried I might be. I had my period though. And have stopped going to the gym as I have been on vacation and got a new job. Do you think I could get them and not be pregnant? I have none on my hips or the sides of my stomach.