Isolating at home

Since I’ve gotten home I have been isolating in my basement because I’m pretty sure I have COVID. This is scary because I live with my grandparents and my mom is prone to getting Pneumonia so I really don’t want to give it to any of them. I got tested at school and it came back negative but I’m sure that’s almost impossible because my roommate and most of my friends tested positive.  So far my symptoms are minor, just achy and feel like I have a minor cold. I haven’t had a fever at all this whole time, which is good and I count myself lucky. However, when I got home I got retested because I knew the school test was wrong: turns out I’m right and I do have COVID. They say I’m through the worst of it which is great and I won’t be contagious for much longer. It’s crazy to see all these people dying from this disease and then when I get it it just feels like a little cold.