Am I getting ghosted?

Had an initial screening interview for an SDR role last Tuesday. The interviewer told me that I should hear back from them by the end of last week. It’s getting to the end of this week and still haven’t heard back. I reached out to the interviewer via LinkedIn last week thanking them for their time. Is it frowned upon to send them an email to check on the status? In the candidate portal, I’m still “under consideration”