crazy period

What are your thoughts ladies?? My period came 2 weeks late. The day before af arrived I had a vvf positive. Then she was super heavy, with big clots, cramps that went into my back for 2 days. 3rd day it showed down and 4th day she went away, only had light pink spotting qhen I wiped. Now the 5th day its brown spotting only when I wipe. My boobs are tender, nipples hurt, headaches, fatigued......was this a period? chemical pregnancy? or could I still be pregnant? (I do plan on buying a cheap test just to see)....but I wanted to see what you ladies think or if anybody has had heavy implantation bleeding.....and this is an abnormal bleeding for me. thanks ladies