Vitamin E.. Is it safe?

I'm 17 weeks and I just started using vitamin E moisturizing cream for my face.. But my mom keeps telling me it may be harmful for the baby and I should stop. 
The thing is I asked at the shop before buying it whether it would be safe or not and they told me its fine. 
But I just started worrying just in case and I wanna be sure
Is it safe or not??