Mom problems

i have a boyfriend and we’ve been together for almost 7 months. i’m not allowed to date until i’m 16 but my parents know about him. he even came over once. my mom and i have been fighting for a while. she never lets me see him other than at school so i snuck out to see him. she found out and got super pissed and took my phone for a month and i did it again and she took my phone for another month. i turn 16 in one week and i asked if i could go see him on my birthday and she said probably not. she goes through my phone and our conversations and my camera roll. she’s not going to find anything now because i hide the conversations that she wouldn’t like. she’s quite frankly pretty mean to me and i will admit i’m not always nice but i try my best. she told me a week or two ago that i could go see him when i turned 16, and now she’s not letting me. my dad doesn’t care, he doesn’t like the fact that i have a boyfriend but he doesn’t see a problem with me hanging out with him until my mom says no. i don’t know what to do. it’s not just about my boyfriend its about the constant arguing and it makes me depressed. i used to be a cutter and before i started cutting i asked her to take me to a therapist and she said i didn’t need one, but i insisted and we went anyway. i came out and told her i didn’t like it at all. a month later i started cutting. she freaked out and had since taken me to 4 more therapists l, which i still absolutely hate. she also thinks i dont need anxiety medication, which i was on until i had an allergic reaction and there’s a new one i’m supposed to start. she told me, after i had snuck out, that i had no rights. i need advice, please help..