AF showed :( new cycle buddy???

OK ladies so AF showed her ugly face! Thought it was implantation bleeding BC yesterday it started very light brownish spotting and I normally have no PMS symptoms at all. And my boobs and back have been killing me and I've been exhausted. Soon as the brownish soottinbg started its like it went away :( still has been very light almost no bleeding st all today. But I'm guessing its AF? So here's my calendar for Feb. Anybody with me or close to what mine is?