First it's an infringement of a woman / couple's privacy to be pregnant in public for any length of time against their will. The right to privacy is protected under the 14th Amendment.
It's an unconstitutional invasion of privacy to have people know your sexual history when you or your partner are pregnant, and also a loss of privacy regarding your medical / mental health concerns during pregnancy and the decision for a potential termination.
It's an infringement of rights for young girls who don't want their parents to know they had sex, and for unmarried people who are expected to abstain from sex on moral or religious grounds (e.g., fundamentalists, Muslims, any other group).
It's discriminatory against Judaism. Jewish women have the right to termination protected in their faith but this will be denied.
No person should be forced to carry a child to term or partial term in the case of preterm labour.
You don't seem to acknowledge the invasion of physical privacy involved in pregnancy (vaginal exams and penetrative ultrasounds as just one example), the financial cost of prenatal and antenatal care for mothers and babies (especially preemies in NICU), stopping work or school, and possibly risking their lives during pregnancy, birth, or postpartum.
There's a mental health toll on parents becoming bonded to a baby whose kicks and movements they will feel for up to six months in a full term birth.
You don't seem to appreciate the hormonal response which bonds most mothers (and fathers) to their child during pregnancy, birth, and postpartum, the hormonal bond created during lactation, the psychological strain and guilt / shame of seeing or holding that child and then placing them for adoption, or the psychological trauma knowing that your child exists whether in an adoption facility, a foster home, or an adoptive home where they may be treated poorly. If they are treated well you may also feel guilt and shame that you could or should have kept them.
That's not to mention the child may come looking for you or the father one day, because of DNA technology.
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I never give you my number, I only give you my situation.
Beatles