Ladies, help please!

I took a pregnancy test a few hours ago, I’m suppose to start my period tomorrow. Well, it was a blank test! No color at all came up! Well, standing there watching it, I finally picked it up within a minute or two. You can definitely see two lines on it! No color, but thick lines right on it, where the two lines would be at! Has anyone else had this happen? I’m going to retest in the morning, but it’s freaking me out and I just want to know already. Been ttc it’ll be two years in July. Currently taking 1000mg of metiformin a day since December 16th. Im 19 years old, and was diagnosed with PCOS about 4 months ago.