I need HELP!!! Plz

Me and my boyfriend have been together for 4 years. Ever since 7th grade. We took each other’s virginity in 9th grade. At first we used condoms but then we stopped because it didn’t feel good. We are now seniors and more in love then ever. We want to have sex with out him pulling out but I can’t tell my mom that I want to go on birth control. She thinks I’m still a Virgin and she’s not someone I can just talk to about anything. How can I make love to my boyfriend and he finally cums in me with out having to ask my mom if I can get put on birth control. I don’t really know much about birth control pills and I can’t go to the doctor to get shots with out her knowing.