chlamydia in pregnancy?

So my boyfriend and I were broken up for a few months.. he lied to me about having sex with someone else while we were broken up so now I'm pregnant with chlamydia.. we've been sexually active for over a month and havent been using condoms.. it's my fault for not getting tested before we were sexually active again.. but im supposed to be 13 weeks tomorrow and we've been sexually active for probably a month now. baby was fine at my 10 week appointment.. what are the chances i miscarried or will? im getting medicine from my doctor today