help please

Okay so I had sex June 1st
He 2000% did not cum in me. 
So I got my period it was dark red / brown and it lasted 5 days when I wiped when I went to the bathroom it was brown but the period had a flow on my pad and looked like period.
I may have caught a cold before getting my period so I had this lump in the throats feeling 
I had my period lasted 5 days 
Really worried could that have been implantation bleeding or anything 
I'm freaking out and really don't wanna be pregnant I'll attach a picture of what my period looked like on the pad 
And this is what it looked like when I wiped 
I really hope it's period