Thoughts??

I technically should have gotten my period two days ago, I had sex June 6, we used a condom but I finished him off by blowing him. I didn't swallow, but I am confident that none of his cum got in my vagina. 
I haven't gotten my period yet but I stuck a tampon up my vagina and then took it out and it had some blood on it. Should I be expecting my period to come soon?? Or should I be worried