Could it be possibly be my BFP????? Please Answer!!!!?

This morning I took a pregnancy test (dollar store brand) and before the 10 minutes were up I looked at it laying flat on the sink and saw a very faint pink line. (I am about 13dpo) When I picked it up and looked closer it wasn't a "clear cut" line, it looked more fuzzy, but it was definitely pink. Now almost 2 hours later, the line is still there, still pink. Is it really a positive or could it be an evaporation line? I'm going to test again later, but I don't want to get my hopes up. What do you think? Thanks for all answers...and baby dust to everyone :-)