Implantation or period?

Br
Ok so I was 5 days late no sign of AF.. So at 3pm today I decided to test BFN!! Then 4pm what I thought was AF come stuck a tampon in then at 8:30 went for a shower pulled out my tampon which had a little blood on ( normally the first 4 hours of starting I'm dripping) but I thought I'll stick a pad on instead but now a hour after its still clean.... When I thought AF come I just went for a wee and wiped it was like a blood clot with clear mucus with a dash of blood speckled around the mucus.. I am having slight cramps but nothing uncomfortable I'm just wondering could it be implantation blood or am I still wishful thinking!! Any advice??  ( I'm thinking I just need some kind words of encouragement) xx