When you say "just got filed" what do you mean by that? As of October 15, 2019 the
only
way you could file a 2018 tax return was to print, sign and mail it in. E-filing is permanently closed for 2018 returns.
If you used the current online software for a 2018 return that is a big mistake--and you could not have "just" e-filed it because e-filing is not yet open for 2019 returns. The online software can only be used for a 2019 return.
Please clarify what you did.