my mom is trying to hold me back:((

i am a senior in high school and my bf just graduated high school and in a month is about to leave for basic training in the navy.  we've only been dating 2 months but compared to my last controlling boyfriend whom i was with for two years, this guy is amazing. i really think he is the one and we have our life planned out. i only recently told my mom of our plans and she is trying to hold me back saying that she just wants me to be happy but i feel like she just doesn't wanna let go of me. what should i do?