How to ask/what do you think it is?

My vagina has been smelling really bad lately.... I never really have sex since I have a long distance boyfriend. But its a super strong smell! My cum is kind of thick and I had a little bit of a yellow looking discharge once the other day. Has anyone had this before and what was it? I don't douche or use scented products down there or anything like that. I've looked up so many different things and what not to do but it still smells. Any suggestions or thoughts? I'm thinking about going to the dr & asking my mom to take me. Any suggestions on how to bring that up and ask her? Thank you for the replys in advance!

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