First two pounds lost!

Well, I have lost two pounds after the first week.  I am glad, not over the moon, but glad.  My weight is starting to go down, and that makes me glad.
   I had another revelation on Sunday.  My husband and I had our 29th wedding anniversary.  Two of our children took us out to lunch.  We went to the Claddagh Irish Pub and I got their fish and chips.  I love fish, and I really love good fish and chips, and Claddagh makes them.  Usually, I can eat the entire plate of food without even blinking an eye.  I love it that much.  Well, Sunday I order the fish and chips and struggled to finish it.  I did finish it, but was miserable for the rest of the day. I think my stomach is shrinking.  This is a good thing, right?  This is what I want, to eat less and do well.
   Have anyone else had a similiar experience?