One positive and one negative. Confused!

M

I tested with a dollar store test and got a line in 2 minutes, no question. I watched it in disbelief until about 5 minutes and I grabbed my last FR digital. I used the same urine as the first test, but it's possible I dipped it too long my hands are shaking like crazy. It came up negative. Is it actually negative? Did I dip too long? Or was that urine just no good after 5-7 minutes? Help!

First test after 3 minutes