Stopped taking bc for a week. Pregnant?

So I am one of those gals that skip the sugar pills in her birth control— or placebo pills.

I have been skipping it since mid January.

And this last week i stopped taking my bc pill.

I had unprotected sex with my fiancée.

And it’s been a week and a few days off of the pill... and i spotted one time during sex so we figured my period was coming.

But a period never came.

During sex i think the cum mixed with my period thus making the color of my “blood” look pink.

Now I’m unsure of possibly it’s implantation bleeding or just the mixture of blood and cum.

However shouldn’t i have had a period? Any similar experiences?

(Btw were okay with a baby I’m just really anxious to know)