Otherwise, she had fond memories of Budapest.
Last year, the 18-year-old set a personal record with 1.06.64 in the city, which gave him a place in the Olympics in Tokyo.
Now she swam at 1.09.81.
- I'm dissatisfied.
I have had a bit tough this season and difficult to find the right timing and grip in the water but thought I would succeed now, the training has gone well lately, says Fast, club mate with Sjöström in Södertörn, to SVT Sport.
It's your first race with a lot of nerves and a long wait. How was it?
- Yes, but I was nervous but thought I could hold it together anyway, looked forward to swimming.
That's a shame.
The nerves certainly put their sticks in the wheel, I did not get the grip in the water that I wanted and missed the timing completely.
Everything just gets bad.
Sophie Hansson swam 1.06.61 and went to the semifinals in another heat of 100 m breaststroke
Fixed 50 m breaststroke left on the program.
- Now I'll just put this behind me and there are 50 left.
It's just to start sprinting now, says Fast and pushes out a smile.