I have no idea how my body works

I live in a really conservative society and I've never been thought about my body because as a women I've been told it's shameful. I'm not talking about things related to sex (which I don't really understand either) But the simple things like what's a normal period, how to deal with pain from cramps, the purpose of a bra, basically anything to do with puberty. I'm 16 and have no idea hoe my body works and wherever anything happens I run to chat gtp because my mom refuses to tell me anything because simply asking why makes me a whore