You could have had it caused by a UTI -
https://my.clevelandclinic.org/health/diseases/15319-prostatitis
https://www.healthline.com/health/prostatitis-bacterial-acute
https://www.mayoclinic.org/diseases-conditions/prostatitis/symptoms-causes/syc-20355766
It's quite common for it to be caused by a UTI, and the cipro would have cured that. It wouldn't have cured it if it was caused by an STD. You can let go of it now.