You’re sabotaging your own argument here. You stated full body autonomy to be a right to then dismiss that within this statement.

Also,

no one should be forced to let anyone else use their uterus

Tell me, how does this relate to your current argument?

I’m against encouraging teenage pregnancy

Encouraging teenage pregnancy isn’t the problem. The problem is the encouragement in general. As said, full bodily autonomy - it should remain a right for all.