Did this happen to anyone else that is pregnant?

Okay so my period is due on the 23rd and anticipation is killer. I went and bought a first responce, and just took one of them. (5:00 pm) The negative line is extremely visible but there is another line. It's really light but it is visible. What do you think? Should I retest in the morning to see if I get the same results. Did this happen to anyone else?