Crystal,
There's something going on with your blood counts, but there's little to be gained by worrying about all possible causes and all the possible outcomes. You'll know soon enough, and then you can arm yourself with information about the specific condition you are found to have. Let's hope it's something directly treatable.
If may be too soon to start learning about specific diseases, since you don't have a diagnosis, but it wouldn't hurt to learn more about blood counts and what happens when they are low.
Do you know the actual numbers from your CBC (complete blood count) tests? That would tell you whether they are just under the normal range or unusually low, and whether they are low enough that you might require a transfusion. You should start keeping copies of all of your test results, and CBCs are the easiest test results to understand.
Lab tests tell half the story. The other half is noticing whether you have symptoms of a low red cell count, a low white cell count, or a low platelet count (fatigue, headaches, frequent infections, bruising, red spots, etc.). Have you noticed such symptoms? Perhaps it's hard to tell while you're already under the weather with a virus, but if possible you'll want to tell the doctor if your low blood count condition is symptomatic or asymptomatic.
You'll find quite a few opinions about bone marrow biopsies in these forums. Just use the
search page and you'll find people who says "it's nothing" as well as people who insist they need various types of pain medication.