How can this happen

🦄Gigi🦄 • 10/01/19 Zion Amir 💕🥰💕💋 02/17/21 Andrea Nicolette ❤️👣👣💗

Last week they found a tiny bit of Protein in my urine so I had to do a 24 hour test over the weekend, so when I went to drop it off today ( I get my results tomorrow ) my ob did my weekly appointment so I had to pee in a cup and the protein came back negative was last week's test a fluke?