Postive first response digital then negative line test?

I am due for my period any day now, but I have been feeling very strange the past couple of days. Smells have been bothering me, my breast are tender and swollen- so I decided when I got home today I would take a test just to see before I went out drinking to celebrate the new year. I took a first response digital and it gave me a “yes+” about 2 hours later (after drinking a whole Powerade) I got a negative on a first response line test. I mean there is nothing there. I know it’s all a waiting game now, but what do y’all think?? I have always heard digital test are pretty accurate. Could I just have diluted my urine too much for the line??