Danielle!
Really and truly..big hugs to you...I speak of my own situation not to deflect from yours but to share experience and knowledge as I was in similar shoes just over a year ago, feeling dreadful, wanted my home back in the US and my mommy and didn't think I was getting properly cared for. I can remember the first 4 months, my GP didn't even want to see me because 'it was the time a lot of miscarriages happen' and they 'don't usually start antenatal care and support until after this time'...which was a load of bullocks to me then because that was when I was at my most vulnerable...all those changes happening to my body and mind....and I didn't have any outside support either...so I really can empathise....I am not going to tell you your being overly sensitive cause I hated when people told me that....I felt so patronised! Your a brave young woman who is stepping into a whole new phase of her life, in a strange place that can also be perceived to be a very 'tough' environment. Motherhood shakes us up even at our most comfortable place (home in your case to be the USA!) so your feelings are completely honorable and understandable. However, the thing to keep in mind, is 'this too shall pass'....(IT REALLY WILL!)
And in my experience, while I found the whole pregnancy, labour etc...not the best experience for me here in London, I did find the after-care made up for that. Hopefully you will too! You should have a health visitor and midwife come to your home for most of your care post-baby...and this is a great help when your little one arrives! Plus, having a baby will be a great way to make friends. I promise you, for almost 6 years I had no friends, now I meet up with two different groups of women for the past year whom I met at my antenatal course. I go to playgroups, baby cinema, swim classes....once baby arrives and you recover....get your self out with that buggy and I promise you--you'll meet people...many will stop on the street just to see your baby! I was a very shy person too who had the impression no one would like me because I was American but you know, those thoughts hardly enter my mind anymore...because you will have something new to define who you are ..and that is being a mommy...and no matter where you are in this world, there will always be mothers. So start your common ground there.
I wish for you the best .....a healthy and safe delivery of your little one....in the end, once you hold baby, you may find all those worries gone....(cause you'll have a whole new set now! ) ha ha ha!
Feel free to PM me!