My 3 1/2 Year Old (almost 4) Daughter's Appetite Has

My 3 1/2 year old (almost 4) daughter's appetite has decreased over the past week. She still eats meals but just doesn't finish them like she has previously, often saying "Im not hungry". This is new, probably started not even a week ago. She has just recently finished up a huge growth spirt. I would say currently she's in the top 10% for her height and weight. Her energy level is great, sleeping is normal. She has had a minor cold thats been lingering for a while. Her 4 year wellness check is scheduled in May. Thoughts?