A.
I'm with some of the other ladies here... I went through much the same thing when my husband and I moved to the US from Germany the beginning of this year. Talk about a big change! I had no friends, no family, and a one-year-old boy, and my husband's job took him everywhere, so we were alone most of the time. I found myself getting tired, not wanting to do the most basic things (like cleaning house and calling friends), and I slept whenever I could. Then I found myself getting short tempered with my son--that was the worst part.
I wound up going to the doctor and explaining my symptoms. She put me on an antidepressant, and it really helped. Now, I have energy to do what I used to do and my concentration is better. I didn't even have to take it for very long, just long enough to get back into the swing of things. Now that I have a life outside the home and a great babysitter, things are looking up.
Good luck. I hope this helps.