Recently diagnosed with chlamydia and scared

I had sex 2 months ago and today I had chlamydia test and it came back positive. I’m in shook because I’ve only had sex with one person for a year and I’m so angry that he lied to me and been having sex with other people. But I’m scared I’m gonna be infertile in the future since I’m going tomorrow to get medicine after 2 months of having it. And my symptoms have gotten worse