Should I do arm lipo (360 degree) and fat transfer my face before or after pregnancy?

I wanna have arm lipo and use fat to my face. Just I can’t decide if I should do before or after baby. I’m currently not pregnant yet. I feel like I don’t have time for my self after baby, but in same time if I do before, I am afraid of ruining the result of both(gain fat back in arm, or getting too puffy on my face where I fat graft on my face) due to pregnancy weight gain. I’m fit person so I don’t think I will be like obese from pregnancy, but I am concern about it.