Would you be mad if you found out your 16 year old bought condoms?

My mom knows I’ve had sex before. I was on birth control then but took it out for medical reasons... me and my bf have been together 9 months and I’m ready to have sex with him. I really wanna go to the store and buy condoms cause I just got my license last week but I’m afraid my mom will find them?? She was mad last time I lied about having sex and that I was sneaking around with my ex. She said she wasn’t mad I HAD sex but mad I didn’t tell her where I was or what I was doing. So idk...