pregnancy safe medication?

For mental stability? 
I have been experiencing depression, anxiety, etc and I am just at a loss. 
I want to tell my doctor how I've been feeling but not if there's nothing she can do. Is there any sort of pregnancy safe mood stabilizers she could prescribe to me? I mean this is out of hand. 
I am this close to smoking weed. And I don't want to do that and fail a drug test. 

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