stretch marks

Emily • First time mummy 💗 due April next year xxxx Instagram @nailsbyemily_xx
I'm only 5 weeks 2 days and this is my first. 
I'm 24 & only very small size 8 and I've never gained weight before. I'm so terrified of stretch marks 😔 even though it's all worth it when I have m y baby in my arms. 
Can anyone recommend the best stuff to use ? I have bio oil now xxx