I don't want my friends to talk about their periods to me
Why don't you want them to talk about their period around you?
I don't really like the idea of them sharing something so personal with me. Also, it is embarrassing to talk about that subject to girls.
It's very rude to talk about periods with your friends. That's your personal business. I don't blame you for being upset.
Yeah, it's almost every day with them. They just state the facts. I have never said anything about it.
Do you think your friends know that you are uncomfortable with them talking about their periods in front of you? Maybe they don't even realize it. You should talk to them about how it makes you feel.