Reassurance needed: so our daughter is 1&1/2 years old, two days ago the doctor drawn some blood to…

Reassurance needed: so our daughter is 1&1/2 years old, two days ago the doctor drawn some blood to check for anemia due to her bruising super easy. Well I just got off the phone with them and they said that she's not anemic but the doctor is concerned because her platelets are high, they didn't say which ones or why he's as concerned as he is but they want her in again as soon as possible to do more labs on her, so we are going back first thing tomorrow morning.... I'm freaking out right now cuz I don't know what it means, just don't know what to think or do