How did you find out that Jessie had this disease?

In November and December, Jessie was getting the usual winter germs, but they just didn't seem to be going away. She would get better temporarily and then get sick again. It felt like we had been to the pediatrician more in these two months than in the last 18 years! She had some blood work done as part of an 18 year old checkup (well visit). She had stayed home sick that day from school and was also sick the next day. Everything was totally normal except for her white blood cell count (2.6 (thousand)). The normal range is 4.5-11.5. The doctor asked if she had had a virus because they sometimes can see this drop in WBC when the body is fighting a virus. She said to feel better and get it redone in a week which we did. It was still 2.6.

Jessie continued to get better than stay out sick for a day or two from school. Antiobiotics seemed to get her better for a while. During the several visits to the doctor, they checked for all sorts of things, mono, limes disease, etc... The plan was to get blood work when she was feeling well after 10-14 days. That never happened.
When she stayed home from school again with a sore throat and feeling tired on Monday, Jan 30th, I knew we had to go back to the doctor again on Tuesday to figure this out. We went back on the 31st to the same doctor we had seen several times now and I looked him in the eye and said, "We have to figure this out! Something is not right". He ordered a repeat of lots of the blood work and he ordered new stuff also. Jessie met me at the doctor's right after school that Tuesday because she felt like she couldn't keep missing....  Little did she know. We left the doctor's office intending to go straight to LabCorp. Jessie's car wouldn't start. By the time we pushed it out of the parking spot and jump started it with my car, she had a job to go to. Blood work would be put off one more day.
Wednesday, Feb 4th she drove over herself right after school to get the blood work done (this 18 thing is hard for me to get used to :-) ).
Fast forward to THursday, Feb 5. at 4pm. I got a call from Mike. Message: "I need you to get home now. Everyone is OK, no one is hurt. I just need you home now."  I called him and he wouldn't tell me anything. I listened to my other message and it was from Dr. Dubleman, the pediatrician who said to call him right away. I knew they had found some answers. My heart dropped. I called Mike back and asked if Dr. Dubleman had talked to him. "yes". "What did he say? What is wrong with Jess?" I choked.  He told me that Dr. Dubleman suspected Leukemia. The WBC had dropped to 1.0 and the RBC had also dropped since the last blood test. There were also cells there that indicated Leukemia. He had made us an appointment at Children's National Medical Center at 8:30 am Friday, Feb 6th for a bone marrow biopsy. I needed to know more. I called the pediatrician and spent minutes waiting listening to music. I called back and hit the emergency button. I was transferred to the doctor after a few long minutes. He told me the details of what he saw. He recommended we pack a bag because he felt she would be admitted Friday after the results of the bone marrow.  Gulp. Hang up. Sob.
Jessie was hanging with friends after school and driving her boyfriend home. Mike and I were going to talk to her as soon as she got home. I texted her. Where are you? She was close. The door opened and closed. My head down. Mike said, "Jess, Mom and I need to talk to you in the living room".
Jess was hugging me on the sofa as Mike told her about what the blood work showed and the possibility of Leukemia and about the test the next morning. She shed a few tears. But not nearly as many as I did driving home. I told her the good news : the doctor said that the tests to check how her organs were doing were all fine so whatever it was had not affected her organs.
We were numb, but family members were doing lots of research on different types of Leukemia and on treatments and nutrition. We were praying and asking for prayer chains to be activated.