My mom freaked out about the tampon in my bag

Yesterday my tampon pack fell out of my bag and my mom saw it; it was like the end of the world at home. She's saying, 'Did we raise you to be like this? There’s no place for these kinds of things in our house,' and so on. I tried to explain, but she just doesn't get it. I told her I prefer tampons because they’re more comfortable than pads, but she won't listen at all. Honestly, I never imagined she would blow it out of proportion like this. What do you think I should say in a situation like this? How can I explain? Or is there really no hope on this matter?