Merkel Cell Carcinoma

What does increasing blood cell counts mean after Merkel cell carcinoma surgery?

Diagnosed May 2025 when a growth on my lower eyelid was removed and determined to be Merkel. Just had additional tissue and a lymph node removed, both clear. But today learned my blood test shows increasing cell counts in my blood. Today, I'm reluctant to start searching for possible other Merkel sites. Any insights?