I've had the gastric sleeve surgery 2 weeks ago i am not pregnant but my period is 1week late?

It happens sometimes: Many women have occasional variation of their mucus discharge, some spotting between periods, a heavier period, a lighter period, a longer or shorter period, or even a missed period. Having one of these symptoms doesn’t necessarily mean there is a medical problem, but seeing an Ob-Gyn doctor may be a good idea if symptoms are recurring. Home pregnancy tests are very accurate by 3 weeks after sex.