What happens when you can feel blood flowing backwards in groin?

Feeling blood flowing backwards in the groin could indicate a serious medical issue, such as venous reflux or a vascular problem. This sensation may be accompanied by pain, swelling, or discomfort and should not be ignored. It's crucial to seek medical attention promptly, as these symptoms could signal conditions like deep vein thrombosis or other circulatory issues that require immediate evaluation and treatment.