If you say that a fetus is equal to the mother, and has equal rights, than you open up countless ways the state can interfere with the woman's life, drinking, smoking, what type of birth she wants, everything.
Really??? Does the state (even with the nanny state crap we have) stop a mother from smoking while breastfeeding? Drinking while breastfeeding? Chain smoking with her kids in the room or car?? Does it stop her from using new age or holistic 'medicine' for the kids??
No
You cannot, however, cause mortal injury, purposely, to anyone under your direct care... whether it be an infant, parent in a coma, or whatever else.. and the growing child within should be no different