Help!!!!!I'm so confused!;!;!

Ok so I posted at the beginning of the month because my cycle was late and when it arrived I was on day 38 and I'm a normal 26 27 day cycle so to make a long story short af showed up Feb 8th lasted my normal 5 days so I go to work today and low and behold it has only been 17 days since af and now I'm spotting and I'm not due till March 6 having slight cramps and I have been tired so the question im having is could I be pregnant from earlier or have I just become pregnant and I'm having implementation bleeding cause it not a normal flow it's on and off spotting sorry if this is to much information but this has never happened to me any information would be greatly appreciated thank you in advance