It’s difficult for me to help you because the information is incomplete. How are you and your girlfriend going to care for your baby? Are you getting married? Do you have a good job? Are you planning to support the child you helped bring into the world? How are you and your girlfriend going to make sure you both get your high school diplomas? Has either set of parents offered to let the three of you stay with them while you get on your feet? If so, have you had a serious talk about rules and roles? Or are you getting ready to move into a place of your own?
The answers to such questions are important. If you are manning-up and doing all you can to be a husband and father, you have the right to demand being treated as an adult. If you are continuing to act like a boy, then your parents are only treating you accordingly.
It takes more than making a baby to make you a man — or a father. Rather than continuing to fight about rules with your folks, you and your girlfriend should be focusing on the future you are making for yourselves and your child. Act like a man who is seriously taking on the responsibilities of being a father, and both sets of parents are likely to show you a new respect.
I wish you well.