implantation PLEASE HELP !!!!

Nichole
Ok , I had sex somewhere between the 19th and 25th of march don't remember the exact date but in that week , I started spotting/ bleeding/ brownish stuff on Thursday the 30th(of march) and that went on till late Sunday (April 2nd) then nothing now let me say I have been so nauseous it's SOOOOO BAD and I feel so crappy!! Now I've been reading stuff that says things like (example) 6-7 days after implantation bleeding....u should test to see if u are pregnant....now here is my dilemma.... does that mean 6-7 days AFTER spotting has stopped? Or during from when it started???? Please help !!