Did you NOT get them during pregnancy???

I'm trying to prepare myself as best as I can for pregnancy stretch marks! I got stretch marks during puberty due to a rapid growth spurt. They are on my bum, hips and upper thighs and are pretty bad. I've been self conscious of them my entire life. I've never been overweight nor have I gotten stretch marks from rapid weight gain (I actually have an abnormally low BMI so people are always shocked to see my stretch marks).

For those of you who also had growth-spurt related stretch marks in a similar area, did you get lucky during pregnancy and somehow miraculously avoid them? I'm currently slathering on all sorts of creams and oils in order to prevent them but I feel like my fate has already been determined based on my history. Just curious to see what happened with others...

ETA: My mom has been pregnant three times and has zero stretch marks. She always thought it was so weird I had so many stretch marks beginning at such a young age even though I've always been a small statured person, so I can't really use her to gauge how my genetics would play out during pregnancy.