Late..

I'm not to too worried yet, But I was just wanting some opinions on the matter. So I'm 3 days late, but I was in a car accident just about a month ago so I've been stressing alot recently. Also I've always tended to have an irregular cycle. With everything I've had going on there was a few days i missed my pill, but continued regularly. I am having weird symptoms that show signs of period, but at the same time I've never tended to have these issues before. I have sore breast, tender nipples, increased lower back pain, upset stomach/nausea. I plan on waiting a few days and if I dont get it I'm going to take an at home test, but what do you guys think?