i need some advice please

so i’m sexually active and i won’t say my age bc i probably will get attacked but let’s just say im under the age of 18 and living with my mom... well i keep asking to get put on birth control and she won’t let me and i’ve tried many ways of asking bc i want to be safe in what i’m doing... i just want to know if i keep having sex if condoms will be enough... or if anyone has any good ways of convincing her to let me on..?