How long do you have to have chlamydia for before you become infertile or get serious health problems?

i'm 16 years old, and i've only ever slept with one guy in my life. he was a few years older than me, and was the first actual relationship i had, besides short middle school ones. during the 6 months we were together, everyone was telling me he was cheating on me, but i didn't believe it. by the end of it, i found out for a fact that he was, so we broke up. that was over a year ago. since then, i've had a burning feeling when i use the bathroom and intense itching about once a month for a few days. i was scared, and in doubt it could be anything serious, so i ignored it, and it would always go away, so i thought nothing of it. i would have more discharge than normal, but i thought maybe it was just part of puberty. i hadn't taken it seriously until last week. the itching and burning has gotten worse, and is lasting longer than it has before. i started looking up my symptoms to put my mind at ease, but doing that made me worry even more. i noticed that most of the symptoms i have, are consistent with chlamydia. to make it worse, i looked up what untreated chlamydia can do to your body. pelvic inflammatory disease and infertility can result from it. i've been having more lower abdominal pain, and i'm really starting to get scared. i've made an appointment at planparenthood for wednesday to get tested to make certain, but if i do have it, i would've had it for a little over a year now. i just want to know what my chances are of being infertile by now? how long do you have to have chlamydia for to become infertile? if i found out my chances aren't good, i don't know what i'd do. i come from a broken family, and there's nothing i want more than to start my own when i'm a little older, and have kids of my own. i've dreamed of becoming a mommy for the longest time, i absolutely adore kids. i know adoption is always an option, but it's just not the same. i want to be able to actually have my own child. can someone please tell me what the chances are that i'm infertile or have any serious problems from having chlamydia for over a year untreated? i also have an immune problem, so i don't know if that decreases the time it takes for the affects of chlamydia to occur.