Covid positive and/or negative? Confused.

My son was sick starting Wednesday. I had him take 2 different brands of at home tests and they both came out positive. He started with a sore throat, then fevers/bodyaches, which then turned into congestion and cough. It took about 24hours for him and then he was feeling better aside from the congestion and cough. I had a sore throat yesterday morning, took a test, came back negative. My sore throat has continued and then I was battling fevers/chills/sweats all last night. I just took another test and it is negative again. Are these at home tests just complete garbage?? Is it covid or not? None of them are expired yet. I did the tests accurately. I am confused. Everyone in my household is negative as well. I tested my son during the fevers which were in the first 24 hours of symptoms, and I did the same for myself.