i’m literally so sick of this

my parents are religious. i grew up in a religious household. i consider myself a Christian.

i’ve been with my boyfriend for 8 months now and we had sex. SUE. ME. it was consensual and we were both sober. he was kind and careful and respectful. we used protection. my parents found out because my mom insists on going back at every doctors office and i wanted to be honest to the doctor for medical safety. i naturally got the hours long lectures that didn’t end until well after 3AM.

my boyfriend currently isn’t welcome in my home. he’s lost all respect from my parents. i changed BC methods in hopes of using one that wouldn’t interact with my other meds and become ineffective, and my parents think i only did it so i could have sex. they just told me that instead of FINALLY having a NORMAL SIZE BED (full size) in my apartment, i’m keeping a twin size because they “don’t want to contribute to us ~doing things~.”

am i the only one that finds this ridiculous? like i’m almost 20. i thought i was an adult that could think for herself and make her own decisions? i’m not saying they can’t be upset, like i understand why they are. but do they have to be so, idk, childish about it? they’re acting like the only thing that matters to me and my boyfriend now is getting it on every night. i just don’t understand and frankly i’m just angry and frustrated and a bit offended. am i wrong? is 20 still too young to decide some things, things involving MY OWN body, on my own?