Will chlamydia or any sti's delay my period?

No: Std's of any type will not delay your period. The most common reason for a late period is pregnancy. You should check a urine pregnancy test. Best of luck!

Not usually: If you have a bad pid infection, it can scar your uterine cavity to the point of not allowing your uterus to release blood. This is rare but possible. If your period is late, then check a home upt.