My mom doesn't want me boyfriend over anymore

Me and my boyfriend are both 16 and pretty mature for our age. We have been dating for two and a half weeks and he's been to my house about 5 times and I've been to his like once and I haven't seen him in about a week and I asked my mom if we could pick him up and she told me she doesn't want him over anymore she says I'm too young for a boyfriend and we got serious too fast and I just don't understand she was the one that let him come over and hang out with me and now she's taking that away? I've been with other guys but I don't think I liked them as much as him and I think she realized that and idk she got pregnant with me when she was 18 and I think she doesn't want that to happen to me but I just don't know what to do.