Need help...

My period was 5 days late, I started bleeding then maybe 3..? Days later it just stops... it wasn't a heavy period whatsoever, normally I bleed for at least 5-6 days and it picks up on the 2nd or 3rd day... i thought it was gonna pick up but nope. & I've been feel so nauseous... is it possible I can be pregnant right now?

The guy I was with aren't together anymore due to me... but when we were we would have sex without a condom then he'll pull out finish & then put one on and go for a "second" round.. 🙃