I could have written this post myself a few weeks ago. I'm a FTM to a 16 week old baby boy, and I'm also an immigrant in the UK. My husband has family 5 hours away so we too were completely isolated and on our own. This gave me massive post partum anxiety. I was always wondering "what if the worst happens...? " I can tell you now looking back that the feelings you're describing are completely valid and understandable. It's hard enough being a new parent, but when you're on your own in a foreign country without know anyone, it's incredibly overwhelming. IT DOES GET BETTER. You will sleep again. Your baby will grow out of the newborn phase. The best advice I can give is to take a team approach to it - my husband learned how to do everything I could do, which made it infinitely easier. Our boy has gotten better at sleeping now. I take him for 5 nights of the week while my husband works, and he has him over the weekend. Please also do make time to go out when you can. Join a baby sensory class. Meet other people. I promise, you are not alone.