I Recently Got Diagnosis With Chlamydia, I Didn't Have Any

I recently got diagnosis with chlamydia, I didn't have any signs. Im on the treatment and today is my 7th day. I took the one time dose (drinking powder type). But on the 5th or 6th day I started to feel itchy on the foreskin, it's that normal, and I also have a dog the sleeps on the bed with me, and i think he has flees, just wanted to know what could it be?