Home made prego test

So I've been reading on Google there's several different options like the bleach test I don't have any bleach so I tried the vinegar one. Basically you take white vinegar and add your into it and supposedly if it changes colors it means you're pregnant. I tried this because I just happen to have white vinegar in the cabinet. After adding the urine I stared at it and disbelief.not because it worked but because I was stupid enough to try it it was very unspecific if what changes colors if it's not clear anymore it's not going to be if you add anything to it.  Is the urine itself supposed to change colors and what implies a change changes from yellow to green or blue or get more diluted well that's going to happen if you had anything to it I even looked up a few YouTube videos on it and all of the people that tried it were just like I don't know if this is negative or not and I'm just like why would you even post it.