Kidney stones and hpts

So I know it's rare to have kidney stones in women, but if any of you ladies are like me I just thought I'd share my recent events with y'all! So about two days ago I was peeing blood from said stones, and I had decided to take an hpt. This was my first full month without tracking with opks but I know from cm I had ovulated about a 9 or 10 days ago. So I took an Internet cheapie and it had a faint line. So after doing some research I found out that the blood from the kidney stones might affect a red dye pregnancy test because of the color of the urine, so I took a digital and got a positive! I was over the moon! But have since learned that blood screws with digitals as well! Since every test I've taken since has been 100% negative and the only change is no more bleeding. So beware ladies! Digitals can most definitely give a false positive!