I took a home pregnancy test and it showed up only one bar. My pee liked really dark. But I swear to god I see another line!

Then try another one. That's really all you can do if you're not certain of the results of the first.

I have always found that digital tests are better for your nerves and sanity when you need to know the answer. I always saw a faint line on those blue line tests too.

And be sure you are at least a week past the period due date and you are using the first urine of the morning to get the best results