Need help I am so confused

​​​​​​​​​​​​​​​​​​​​​​​​​​Help! Could this be a false positive? The first Day of my period was the 11th and the last day was 15 December. I took the test today 26. Does this mean I was pregnant and got my period? I am so confused, I also took a pregnancy test the 10th of December and it came out negative.