When I think about it, I've definitely had issue with depression (or low mood) for years. I just had a great support network back in the US.
Now that Its just me (and my husband) it's not as easy to deal with in a constructive way. There aren't any friends around to simply say, 'Oh, you're having a crap day? Let's grab dinner and chat!' Or pie, a movie... or going on a small adventure.
It's... hard.
And I agree a lot with what kissofdeath said. I simply don't want to share my innermost thoughts with people I don't know well in person and I definitely don't want to burden them with my problems. I think American women are expected to be strong, smiley, happy people who are always kind and gracious and lately.. It's not easy to be that person.
I had to tell my mom the other day on Skype that, 'no, I'm not going to smile simply because you asked me to.'
And if you allow yourself to think about certain things too much, you start to break down. Like crying while you're walking to work. Which is hella awkward.
I would even settle for just going to get an iced coffee and a walk or drive somewhere nice - not even to talk about what's bothering (because sometimes it's literally nothing) but grabbing coffee and chatting will just be a way to take my mind out of that place and put it elsewhere in the moment which can then turn things around, if that makes sense.
Exactly that about expecting to be strong/etc.. It's not that I feel you aren't strong by saying you've got mental health issues or wanting to pretend they don't exist by any means, it's just that I feel more weak and vulnerable opening up about that stuff because I'm not usually an overly-emotional type of person so it's totally different for me to be that way (and probably unexpected for some people). I don't want to put off people that could turn out to potentially be my friend by burdening them with my mental health issues.
I never liked telling my family outright that I was feeling "low" or whatever when I lived in the US, it was just easier for me to get the support from my support system by throwing myself into being around them and doing activities and they could usually tell if I was having an off-day or if something was bothering me. I don't like to tell them now because I know my sister has enough anxiety on her own that I don't like to worry her by having her worry about me because she will worry! Same with my mom. I don't want them to worry when they are half a world away and can't do anything in person as I feel helpless already myself and don't want them to feel that way as well.
Ohh man...I nearly cried today thinking about all the stress and how crowded my head was while I was at my desk...I literally had to look away from what I was typing to just give myself a second as I didn't want my coworkers to think I was weird! hah totally get you on that! And I'm not a crier and they know that so would've made it even more awkward!