Sick leave - Call Center Agent Foundever Employee Review

So I got fired for having what felt like pneumonia I was⁸ so sick cudnt even hold my head up and it was Friday around 7 730 bc I worked 11am to 10pm so that was the first time since I had been feeling bad enough to where I needed to go lay down. So then sat was my normal day off so I lasted in bed all day sat. Well Sat night around 6pm I sent for my mom to get me to the emergency room well turns out I had fever infection sinusitis and it was in my chest the congestion was unreal so diagnosed with that plus had a 4 day excuse from doctor and plz keep in mind I'm so sick I can't hold my head up so my bf sent the excuse along with my paperwork over via text so that was Sunday around 9am -11 but then here comes Monday I get a text from my boss saying call me ASAP so I did just that so he was really polite and said yes HR is letting u go for the time you've been missed and then he said I'm sry if this has inconvenienced u in any way. So that's how much they care about their Employees. I was without words😞