My CBC rt of feb10th was normal but platelet count was 87000. No sign of bleeding. Cbc rt of 3rd march is also normal and platelet is 110000?

Low platelets. There are many things that can cause low platelet- including infection, inflammation, autoiimune problems, drugs, malignancy , etc. Follow up with your primary doctor. If your platelet level remains low or gets lower- your doctor can refer you to see a hematologist.