Worried

So about 20 days back my boyfriend fingered me and inked a little and about 12 days back we had sex with a condom on...

The condom wasn’t torn and he didn’t ejaculate in me

I missed my period it’s 13 days today

I took two pregnancy tests one right before my period date and one three days after my expected period date

Both came up negative

Is there any chance of me being pregnant or is it my stress delaying my period

What should i do?