First WELCOME to PC!!! Second, I think your english is great!
I think only a doc can tell you exactly going on but I know stress can tighten your muscles up in a big way. Moving to a different place is never easy. Alot of changes and new things in your life. I think stress wise it sounds normal but if it keeps you from doing things you enjoy it is best too see a doc.
Again Welcome!
HUGS
Cher