Affiliate Marketing Secrets

Me and my girlfriend we had sex about a month ago and was her first time doing it as well as mine. We have been going out for almost a year and i had an empty box of condoms on my bag which my mom happen to go through my bag (even though she taught me to respect other’s stuff) and she found the empty box of condoms. i was going to soccer practice and on the way out she told me “what was that box on your bag?” and i just pretended i didn’t hear her and walked away, however, after i left the house she yelled “i’m telling your dad” and that alarmed me. My problem with this is that my mom she treats me like i was 10 even though i’m 17 almost turning 18 and it really bugs me because i can’t drive because of her belief that “you’re going to crash onto another car” even though the streets i drive in are basically empty and i have driven for over 1 year now. Also i can’t go to places besides the park in front of my house because she thinks “you’re going to get shot” or “you’re to smoke weed with your gangster friends” even though our neighborhood is calm and i don’t smoke weed nor i have friends who are affiliated to any gang. On the other side i have my dad who is an open minded person. He talks the problems out contrary to my mom which she starts yelling and accusing people of being gang members or stuff like that. My dad will talk out the problem with me if she tells him about the box of condoms she found of my bag but my mom will basically start WW3 about that box of condoms. Also my girlfriends parents are the really strict parents and i understand that and that’s why i used the condom in the first place, making sure she didn’t get pregnant or get any disease. I don’t want her parents to know about this but if there is no solution then i will attach to the consequences. How can i talk about this to my parents if they asked me about it? any suggestions. My girlfriend told me that if my mom disapproves me using them, then she’s denying safety from us by not letting me use the condoms. I know it’s not right having sex at such a young age but me and her talked through it for a long while and we both agree to attach to the consequences. Basically my problem is that how to discuss this with my parents? any suggestions?