Agree to sex doesn't mean agree to pregnancy. Those are different things. The proof of this is that many sex doesn't produce pregnancy. Sometimes because the people involved use contraception. Other because it just doesn't happen (and sometimes even when people are looking for a child). No, not everyone who has sex is looking for a child. This is quite obvius.

And the second someone say "I want an abortion" what is saying is "I don't consent to pregnancy, I don't voluntary want to be pregnant". When you claim that there the act of sex should mean "tacit" agreement to pregnancy, you are ignoring explicit disagreement and their right to body autonomy.

It is what it is. Women who want to abort don't have voluntary pregnancies, they have forced pregnancy. And since that affects their body, then you are denying body integrity.

If it was voluntary, you won't need to ban abortion, since people who look for a child only abort in case of risk for their health.

Then again, your point is about denial so you can keep feeling good about yourself while denying women their right to their own body.