Stretch marks 😲

Nancy
Hey ladies so I'm 4'11 weighed 135 prior to pregnancy && now weigh 160 at 6 months pregnant so gained 25lbs so far with my first so everything is new to me but I was just wondering if anyone has or had stretch marks behind their knees like this && if so did they clear up after giving birth ? I've always had big thighs but now they're way bigger && gotten alot on my inner && outer  thighs as well && I'm hoping they don't stay super red && noticeable .
Does anyone relate or have any tips ?
Thanks in advance for any help (:Â