Please Help!!! Implantation Bleeding or something else!?

AF appears to be a week early. I went to the bathroom to relieve myself and to my surprise I wiped and there was bright red on the toilet paper. I haven't had the usual symptoms of AF like bloating, cramping, chocolate cravings, etc so I was not expecting to see that! 
I had intercourse with my husband a couple of days back, but it wasn't during my fertile window.
Is it possible that this could this be implantation bleeding or just a very early period?