COVID positive??

Hey guys,
I just want to know your opinion on this matter.
I was in hospital for a laparoscopic surgery which at admittance did not perform covid pcr test on anyone. The next day I was sent home without complications. I was on sick leave for the week and left the flat rarely (I went to a restaurant once). On Day 8 I went to my surgeon to remove the stitches. I also helped move 100 kilos of dog food to a shelter on that same day. A few hours later at night I got a fever of 39 degrees and couldn't sleep a bit. The next day I called my GP and he ordered covid pcr test and self quarantined. On Day 13 I lost my patience and paid for a private pcr test (evaluated at an accredited lab). On Day 14 it came back negative. On Day 15 I finally got called in for the GP mandated pcr and it came back positive on Day 17. Unfortunately I did not receive the result until Day 22. I immediately asked for a new pcr, antigen and antibody test. Everything came back negative except for the IgG was was positive. It was a rapid test (iCHROMA). The result was 1.4 and it is considered positive between 1.1 and 200.
I know that rapid tests are not exactly reliable and I am not even sure now if the positive pcr was real.
I had no other symptom except the fever. I thought it was due to the exhaustion of moving 100 kilos 1 week after my surgery.
False positive pcr is usually due to cross-contamination as I learned from microbiologists.
I always wear masks.
I am just interested in your opinion. Thanks.