confused

 I've had a period at the first week then another on the last week of this month . This is my first time every experiencing this. I thought I was experiencing implantation the first "period" because I was light and spotting the entire time and it lasted an extra day then normal.  Now all  f sudden I believe in experiencing a yeast infection and I've never had one before .  I took a pregnancy test maybe a week ago and got a vvvfl and then I tested again this morning and didn't really see anything . I have no clue what's going on with my body ! Help anyone ??