Late period month after egg retrieval

Okay so I had my retrieval Feb 10th and my period came March 17th ended around 24th then the 28th started bleeding slightly again for around 5 days doc said it’s prolly just hormones leaving body I’m doing frozen transfer so o have to wait until my next period but here it is the 24th and nothing I was expecting it the 17th should I be worried is this normal should I wait another month for transfer if the period does come soon ? Has this happened to anyone ???