What Causes Delayed Periods And Stomach Cramps?

Hello, I ve recently been late for my period. I am around 10days late and I am usually on the same day monthly with the occasional late days on occasion. I am not experiencing any symptoms of pregnancy which I have previously, however I have been having stomach cramps and lower abdominal pains when urinating, I am stressing out that I am pregnant so could this cause me to not come on? Just wondering if you could give me an opinion. Thanks,