Do you think I'm to young?

So, recently my boyfriend had the idea of us getting married when I turn 18. There's a ton of people in my life who constantly tell me to don't settle and who always give me shit for what I do with my life. Mainly my mom, who ended up marrying my dad just to piss her family off. I feel like my mom thinks I'm going to make the same mistakes she did and she constantly compares me to herself. It's just extremely hard to try and make up my own life decisions when my mom is constantly tearing down my dreams and thinking I'm going to make the same mistakes she did. But anyway do you think it's to young for me to get married at 18?