Got walked-in on... embarrassed?

I have a female roommate who’s sorority-sister friend saw me naked and now I feel awkward... I’m trying to get an understanding about what her reaction might have been and whether it’s likely or not that she will tell (and what she might tell) my roommate/ her other sorority sisters. Her friend knocked and then came in while I was in the shower, saying she had to pee really badly and that she was sorry. Our shower door is basically see-thru and, having just woken up, I was ‘standing at attention’ down there when she came in...

Should I be embarrassed? Did she even look or notice? Will she say something, cause my roommate’s sorority sisters are over all the time and I’m feeling embarrassed about what she might have told them...
Honestly, she probably didn’t even notice
As soon as she noticed it, she ignored it
She might have glanced but nothing more and probably won’t say anything
She definitely looked and is going to tell her friends
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Got walked-in on... embarrassed?
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