idk what to do

so im still in my first trimester and im getting alot of stretch marks, could it be from gaining weight to fast? my stretch marks are on my calves, thighs and on my behind😭 they’re slowing coming onto my hips and i’ve tried using the cocoa butter cream hoping it helps the stretch marks and im just not sure if it has to do with my pregnancy but its making me feel insecure a bit.