very light period... need advice!

Amanda
So af was suppose to start last wed..called the dr and made an apt for today ( it got canceled do to my dr missing her flight or something like that) I started spotting light after I made the apt. I didn't even fully bleed heavy for 2 full days ( I always go a full 6 days with a few heavy days and one or 2 light days ...and now I'm not bleeding at all. My new apt is on Thursday. I'm wondering if I should take another test. I tested on Thursday and it was a bfn. Haven't tested again since. Should I? Or should I just wait until Thursday and see what my Dr says..