I messed up and I have noone to talk to...

I am desperate and I have noone to talk to, so I will ask here. I work in mental health services and at the end of last week I called a potential client to schedule an appointment. The appoint. was for her daughter but instead I said it was for her son. I said "My name is such and such and I am trying to reach Ms. X in reference to her child. I understand he has such and such difficulties." The form where I had their information written was covered so I did not see it was a she not a he...She asked me to call today since she was busy last week and when I called told me she wanted to speak with my supervisor. I said OK but since supervisor was not in, I called back saying she wasn't in and I wanted to schedule the appoint. with her and her daughter. Long story short, she told me I was unprofessional and what I did wrong (not read the info sheet prooerly, caller her daughter a "he" , then said her daughter's name wrong although I am pretty sure I pronounced it right). I feel terrible as I normally am careful and don't make such mistakes but I was really tired when I called and I wanted to schedule them to come in. Now I'm afraid she'll call my supervisor (although she said she will not do it and chances are they will not even come in - not only because of me but also another reason I can't disclose) So, what do I do now? Tell my supervisor about my mistake or hope this person won't call...I need to call this person again with information she requested. I know I made a mistake, but really my intention was good..sometimes I get overworked and make mistakes Someone please help me. What do I do? I have noone to support me and I feel like crap.

you said it yourself right here

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That's the whole trouble. You can't ever find a place that's nice and peaceful, because there isn't any. You may think there is, but once you get there, when you're not looking, somebody'll sneak up and write "Fuck you" right under your nose.” - J. D. Salinger

a spiritual being having a human experience

Yes, thanks, but it is hard as I do not know what to do. Do I let it fly and hope for the best or to I bring it up myself?
I feel like a total mess sometimes...and what makes it harder is that I have nobody to talk to. When shit like this happens I feel like I want to go back home. I do what I do because I like to help kids, but when I need help there is nobody to help me. I have no friends/social support whatsoever. I used to read in books about "social support" and, as a foreign citizen whose first language is not English, I did not know at first what this meant. It was a term that sounded so abstract although of course, we have this concept back home as well, and it was only after I experienced what lack of social support is that I put the concept with the words together.
My family is away, my friends are in my country (although everyone went on their own path, nor am I good at keeping in touch) and I feel alone and lonely.
At work, everything and everybody is so competitive..when things like today happen, it almost feels like "what's the point?" "what's the point of overworking myself? what's the point of being away from my family? what's the point of being here if I am not happy?" it sucks, I know I'll get over it...but when something hits me, it hits me really hard. such a slap in the face.
thanks for reading

Hey, its a minor mistake. Its really fine. The woman completely over-reacted. I used to work in the medical services and I made far worse mistakes. Your supervisor will understand, its a very small mistake to make.

it was a mistake and you corrected it with the woman, she needs to chill out.
she sounds liek she could be a bitch so i'd beat her to the punch and let your supervisor know what happened and that you dealt with it, just incase she does call.

end of the day, they can't fire you for that and your boss would be able to deal with her call, should she call, easier knowing what had happened.

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