Engagement at 16?

So..before everyone judges me just know on here asking for help so if you want to be rude in anyway please don't comment on here...so. I'm 16..I have been with my bf for a year and a half ...and he's 18 he loves me so much ...and I love him so much... we have been through a lot together miscarriage...parents constantly yelling...school...work.... it's a lot more than just that but I'm the end we love each other so much ...I can't stretch that enough he and I really love each other ...and I honestly can't see myself with anyone else . We have spent xmas's together thanks giving..Easter with family ...I really just can't imagine more than I want in a guy then him he's just...- anyways...I bought an engagement ring ...($200) because I have a job and I'm paying bills...and going to school so I can afford it. Anyways I want him to be reminded by that ring when he looks down at it that even though we have been through so much I'm still with him no matter what happens love concerns all...he protects me. He loves me. He's more than I could ever ask for . He tells me constantly "you're the only girl in the world I need "..."I can't wait to share my boring life with such a fantastic girl like you"... anyway ..please tell me if I should do this I want to propose..we wouldn't get married until I was ilder but I still want this for both of us...let me know (my family is out of the picture due to different reasons so don't ask about them)