‼️FINAL UPDATE (was) IN COMMENTS‼️How do i tell my mom?

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💥FINAL UPDATE(was) IN COMMENTS SO READ THAT BEFORE YOU WRITE ADVICE💥
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UPDATE IN COMMENTS TOO‼️
(original->) How do i tell my mom and possibly my dad that i've been having sex since may? My mom would kill me... all because she said that she wanted me on birth control if i was going to have sex. (I'm assuming that meant from whenever i was ready for sex to now and I'm 18 now) 
she still wants me on bc but she can't force me on it. what I'm worried about is that i will have my car taken away, kicked out or be hated by my parents. or even the restrictions of seeing my bf. 
she holds it over my head that when i was like in 6th grade we promised that if i was ready for sexual activities, i would go on bc.  but i havent once talked to her about sex or the rest of 'the talk' since Robert Crowne in 5th grade. She never made it easy to talk about it all. Hell... i should just tell her tomorrow after school. she came across a receipt from my BEDROOM that said first reaponse. shes going to know. how do i do this with a mom who wants me on bc until i want to have kids.... 
my bf used to wear condoms but they hurt me so bad so we have do the pull out method and it has worked out good every single time since june. i planned on telling her that he wears protections, because it was true at one point. 
any advice...?
‼️updated 12/5/16‼️
everyone is saying go to a gyno or go to planned parenthood but you need to have your health insurance with you and mom refuses to give me it. so i don't know how you want or suppose i do that. and everyone telling me that i should have my bf wear condoms, one he hates them because he can't feel anything and two whether they are lubed or not, they still hurt me. 
anyone telling me to not tell her, i wanted to have a bond with my mom since we arent super close. she has told me i could talk to her about personal stuff but she doesn't make it easy since she tells my grandmother and father. about EVERYTHING. I really have no one to talk to about stuff like this besides this app. thats why I'm asking. Stop making me feel terrible for these decisions. No we can't afford a baby(im the only one with a license and job), no we don't use protection(it hurts me too bad), but what we have going is doing good (him using the bathroom every time before sex to wash out any lingering sperm in him from the last ejaculation.)
i asked for advice not to be told I'm irresponsible and not mature enough. I'm only on here asking because i want to be able to talk to my mom when i want to but I'm too scared and don't know how to approach her about it.
‼️UPDATE 12-9-16‼️
Okay so i asked my mother if our dr would be able to recommend me a gyno like most everyone had suggested here. well. she responded with 'why?' i said because i thought it would be good to start going to a gyno and she ignored me and told my dad i had asked about it. So that happened. I still can't get my insurance card from her and I'm pretty sure she doesn't want me asking about personal stuff like a gyno again. 
Also. Please for gods sakes stop telling me I'm immature. I have said my relationship with my mother is rough and that I'm scared to tell her and ask her anything. I don't need to be called immature from a majority of you. I'm not asking to be called that. I'm asking for advice on telling my mother and now the asking her about personal stuff. 18, and just because I'm 18 doesn't mean i know everything yet. this app is for help not insulting and calling names. And stop saying that me bleeding and being hurt by the condoms is an excuse. I'm not allergic to latex but my friend made a good point, maybe I'm allergic to the lubricant on the condoms. But everyone seemed to jump to the conclusion of "it's an excuse". It's not an excuse. stop saying it is.
update 12/21/16
since no one seemed to look for it:
a d i called it too. she hasnt searched for the gynos name 😒