What does this mean?

Addie
Day 46 of my cycle
Last period started 2/25
3/4-3/7 Spotting
Took my last BCP 3/7 
3/22-3/27 Yeast Infection 
4/4 very light brown spotting 
4/5-4/9 extreme nausea 
4/11 BFN at doctors office
4/12 light brown spotting