Period or implantation

emma

Hello ladies looking for positive advice last App I was on very negative. Last cycle was Feb 23. Started spotting march 8th last about 3.5 days was not a lot only used a pantyliner was not consitant. Period was due March 18th by 1 app and March 19th by thos one well still no period and negative pregnancy test. Last test I took was not first pee.of day about 11a most. and last tes before that was about 5 days ago I think all negative. Please help