Why would a lymphocyte count be low? Everything else about the bloodwork was normal?

Several factors can cause a low lymphocyte count, such as:

The body doesn't make enough lymphocytes.
The body makes enough lymphocytes, but they are destroyed due to an abnormal condition.
The lymphocytes get trapped in the spleen or lymph nodes. Lymphocytes normally pass through these organs into the blood.
A combination of the above factors.
A number of diseases, conditions, and factors can cause the above problems that lead to lymphocytopenia.
Lymphocytopenia can range from mild to severe. The condition alone may not cause any signs, symptoms, or serious problems.

How long lymphocytopenia lasts depends on its cause. The treatment for this condition also depends on its cause and severity. Mild lymphocytopenia may not require treatment. If an underlying condition is successfully treated, lymphocytopenia will likely improve.

If you get serious infections due to lymphocytopenia, you may need medicines or other treatments.
I'm sure your doctor willfollow up with you.Hopefully all goes well.Try not to worry hon. It may resolve itself. Take care and best to you.
ciao bella