How do i know if i have pain in my legs that is dvt?

Pain and swelling: The most common symptom of DVT is pain and the most common physical finding is swelling. However, not everyone has these. If you have unexplained swelling with or without calf or thigh pain then a venous ultrasound would be indicated to look for a dvt. Sometimes even a ct scan or mrv is necessary. The bottom line is, if DVT is considered, then proper testing is required.

Dvt: A deep vein thrombosis presents with swelling, discomfort, and heaviness of the involved extremity. It may be proceeded by trauma, long car travel, or airplane travel. If there is a suspicion of a deep vein thrombosis then a color-flow venous Doppler-sonogram would be the most informative test.