Pregnancy test at military clinic

ken
So last Thursday I took a physical for airborne school. The night before I was required to drink a lot of water, so I did. I took a pregnancy test but never got any word back meaning, not pregnant. I was supposed to get my AF Monday and she has yet to come. I finally decided to take a pregnancy test and got these results.
Do you guys think I got a negative last week because I drank so much water the day before and the day of? Btw they never took a blood sample.
Oh and the two test at the bottom have faint lines that you may not be able to see from the picture.
Thanks for your feedback in advance.