Confused

Ok so I noticed that my period was about a week late (weren't actively ttc but weren't being protective either) took a test (blue dye) and it was a faint positive, the next morning (7 days late) I started my period (figured I just had line eyes or just faulty blue dye) went on about my day, but my period was odd, very light, quick, no cramps or anything. Then I started feeling grossly, indigestion was awful, aversion to my morning coffee. So I decided to do a retest this morning thought it was negative, just went to toss it and it looks positive...anyone have this happen?