<human>: Give me the gist of the text in a nutshell

Hello, any advice is appreciated. Sorry for formatting, posting from my phone.

I work as an administrative assistant for a debt collection company. Over the month of January I had a number of absences for one reason or another (snow, sick children, my pipes froze at one point, etc). As a result, I was placed on an attendance warning. 

Last Thursday, I was involved in a motor vehicle accident on my way to work. I still showed up to work, an hour ahead of schedule (they were offering overtime) and worked more than a full shift, since I felt fine. Friday morning I woke up in alot of pain. I called work to let them know I was going to my doctor. My doctor told me not to go back to work until 3/12. I  returned to work anyway, and finished up my 40 hours for the week, then left. 

Monday morning I called out due to pain. Tuesday, when I returned to work, my boss asked me for a doctor's note. I informed her that my doctor didn't want me coming back to work yet, but because of how behind we are, I came back anyways. She told me I had to get a doctor's note before returning to work, but had me stay and work my shift. I told her I would go to the doctor the next morning and get a note, but that unless the doctor changed her mind, I couldn't come back until Thursday. 

I went to the doctor as planned, got said note, and went home to relax with my kids. When I came in to work today, I gave my boss the note, and she said we needed to have a meeting with HR since I no-call-no-showed the day before. She had me go back to work and told me she would get in touch with HR and let me know when we would go to meet with them. By the end of the day, my boss said we would have our meeting late afternoon tomorrow, Friday. 

Since they had me keep working, should I be worried about losing my job? The doctor's note states that I may return to work on the 12th, can I get fired for not calling to reiterate that on the 11th?
<bot>: Boss lady trying to fire my ass for not calling out, even though my doctor's note says when I can return to work.