Stretch marks

Kiley • Pregnant with rainbow baby! ❤️👶 due date April 20th!
I started getting stretch marks after I had my miscarriage in May. I got pregnant within a couple months after that, but my stretch marks have only gotten worse. I don't mean normal stretch marks on my hips. I started getting them on the inside of my thighs, but they have moved all down my thigh and starting to go to my calf. I almost have them on my hips and my butt/ back of my thigh. They are awful and very visible and red. I have always been around 140 pounds and 5'8. And I have actually lost weight since I've been pregnant. My doctor told me it could be from the hormones. 
Help...?