HELP ME.!

eve is saying I'm 11 days late for my period. Im trying not to freak out because I was late last month as well. I have been having really bad cramping every now and then but for a few days it was pretty much constant and so bad that it made me want to vomit; but it's subsided quite a bit. The last few days i have worn a tampon at work just in case I do start but every time I take it out, this is all thats on it (pic below). Im kind of starting to wonder if this could all be caused by implantation possibly(?) If anyone has had anything similar, I'll take any and all help.