I am absolutely pro choice.
But I agree that drugs during pregnancy (weed, booze, anything that might harm the future child) should be prevented.
Which, I feel, puts me in an odd spot by my apparent hypocritical application of “My body, my choice”.
So, I think it is to do with the intention.
If someone intends to carry a baby to full term, then they should be responsible for ensuring that future child’s well being.
If that person makes the choice not to carry the baby to full term, then yeh: their body, their choice. I have no issue with them taking drugs or whatever.