Was it out of line ?

So my mom knows I’m pregnant and she told my little brothers. One of them was like well she wasn’t wearing a condom and my mom agreed with him. I’m like how the fuck would you even know that? Condoms do break and you’d think she’d know that as an adult. Also birth control isn’t 100% either. So was it out of line for her to let my brother assume I wasn’t using condoms or should’ve told him it’s none of their business.

She doesn’t believe me because I get the I’m your mother I know everything. Like ok so apparently you were there when we were having sex. And she said it’s obvious we would have sex while on the road like there’s nothing else to do I guess. I’m twenty two. I know the risks with sex. My boyfriend and I didn’t expect a baby when we officially came home but we got jobs and looking for an apartment. We live with his parents so we are saving money to move hopefully in October.

My brothers are teenagers in tenth grade