Think you are just fed up and a bit overwhelmed with all the changes you are about to go through. Try one of the herbal remedies which always work for me in the short term. St Johns Wort, Rescue Remedy, Bach flower remedy Oak or Elm is excellent. Quiet Life or Kalms: all over the counter although not sure whether available in la belle France! Hang in there. After a spell on anti depressants for post natal depression years ago, (and working for a big pharmaceutical company), am very pro natural remedies as the first course of action.
Think that after having your thyroid out, you do need to stabilise your system too. Good luck and you are not moaning"!