The first step to obtaining advice and information in an area such as anemones is for you to provide:
Age and size of tank
inhabitants
filtration
parameters
lighting
how long you have had the anemone
what kind of anemone
is the clown bigger than the anemone
and a picture always helps
Its really hard to answer your question because there are so many factors that can make your anemone unhappy.
Please post more information and we can better serve you
Jess