My period is 3 days late. My do not hurt?

I was so constipated about 2-3 weeks ago. I was also sooo gasey, burping and farting (sorry for the vulgarity, but I typically do not get this way), now here I am late on my period. My s do not hurt at all, which is unlikely right before my period as I have double D's. Also, these past few days, I have felt bloated, and sharp stomach pains which I typically do not get. I have been getting my period since the age of 15, I am now 22. Always had normal symptoms, but this is just outrageous! Anyone give me some good advice?