What to do if you fear someone from work overheard a conversation?

Anonymous
I was at a coffee shop talking to a friend. I was very into the conversation and not aware of those around me. I was mentioning some people from work, their first and last name, which I regret. Other coworkers frequent this coffee shop, & I fear that perhaps they may have overheard the conversation. Perhaps this is just needless worry on my part, so how do I handle the worry? I was thinking of approaching the few people that may have gone to the coffee shop just to see what they were doing on that particular day and it would give me a hint as to whether or not they were there to overhear it. I think doing this may alleviate some of my anxiety. Maybe not. Please don't think I am strange, I just have a real problem with anxiety. Any suggestions on how to handle that, and how to handle this particular situation? Thank you so much. Perhaps those who suffer from anxiety can empathize with me and offer advice.
Updates
+1 y
I was talking with my friend about and romantic relationship that is occurring at the office between the two people whose names I mentioned, both first and last names. I don't know what I was thinking! So that's why I'm so worried. This could really backfire on me, and it could hurt them which I don't want. I should not have been talking about it in the first place.
What to do if you fear someone from work overheard a conversation?
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