Hey I'm asking this for a friend she wants to know if it is possible to get chlymidia if the person your sleeping with doesn't have chlymidia.

Well... yes, it IS possible, however, if it's a monogamous sexual relationship and both parties are absolutely sure they're clean, then it's highly unlikely.

Is your friend having any symptoms that's letting her believe that she has chlamydia? Is she absolutely sure that the person she's having sex with doesn't have chlamydia? (and by absolutely sure, I don't mean just simply asking)

Yeah she's definitely sure she hasn't had a test yet but she has had this same problem before with other partners as well. She thinks she's always got it and the pills don't fix it

What are her symptoms.. I'm thinking it's more of a yeast infection than chlamydia.

Chlamydia can lie dormant for a very long time without symptoms, especially in women. Just because someone doesn't have noticeable symptoms does not mean they are not carrying the disease.