Take a test. None of us can tell you if you are pregnant or not, but a test can. They say on the The Bump a lot of that if you are pregnant enough for symptoms, then you are pregnant enough to turn a test positive.
Yes, your pills are dual pills (meaning they have progestin and estrogen) so they, in theory, block ovulation. But, it's not a fool-proof mechanism.
When you say you took pills late, do you mean you were off by an hour or a day? If I forget a pill one day, we use back up. I take my pill roughly the same time every day, but I'm not militant about it so a few hours each way doesn't phase me.