However, this is probably correct. A single SSRI pill really isn't a big deal. At worst, it will just weaken your roll this one time.One random SSRI should be no biggie, just roll whenever you want to providing you haven't rolled in a month or so.
Which SSRI was it and what dose? They all have different half-lives. Paroxetine (Paxil) and sertraline (Zoloft) have average half-lives of about a day, but for fluoxetine (Prozac) it's typically 2-3 days. After a single dose of any of them, you should be back to normal in no more than a week.
However, this is probably correct. A single SSRI pill really isn't a big deal. At worst, it will just weaken your roll this one time.
Since it's only one, a week should be fine.
However, most SSRI users will need many weeks, if not months too undo the damage caused by 5-HT down regulation... some will never be able to roll again, no longer how long they wait..