Anyone ever had Chlamydia before?

This is a personal and embarrassing question but I had to ask. I was unfortunate to have a cheating partner 4 years ago. Sad thing is I was diagnosed with clamydia right after he left me and we had a long distance relationship. Of course, he was trying to reverse what really happened, Telling me I was the one who cheated. 😞 
i was given a prescription for it. After 3 years, i again, was diagnose with Chlamydia 😞. I was told by the Dr if the infection comes back, I may not be able to conceive at all. 😢 
I know my husband now is not cheating with me and nor do I. I don't understand why this infection keeps coming back. 😢😢😢