Self tanning lotion

Okay, some of you may find this a stupid question but I'm honestly curious, do any of you use self tanners while pregnant or know of any that are safe to use in pregnancy? I work in a barn all day so that translates to NO sun or rather a super awesome farmers tan and I feel so white compared to what I normally get during summer . Using It might also help get me in the routine of actually putting lotion on my tummy /back every night so if I can I might as well.  Thoughts?