According to the Islamic law, No one should be forced into marriage and if any one, the girl or boy, is forced the Nikah is void I.e. Batil.
But since you didn't say anything during the Nikah, your Nikah is correct and you are now a wife of this man.
My Dear Sister, I'm sure it was hard on you to have gone through all that beating and psychological pressure, but now the reality is in your hands at the moment. It in is your hands to make this work and not live in your past. What happened has happened and gone. What's important now is that baby in your womb. Would you want your child to suffer by seeing how her mother is always unhappy and depressed?! Instead I would suggest you start focusing on your marriage, and your child. This will help you focus on greater things Allah is blessing you with.
I pray you find happiness, tranquility and make a great mother for your little angel.