Had deep vein thrombosis and blood clot in leg veins. should i be worried?

Yes - w/o treatment: Dvt can break free from your deep veins, travel through your bloodstream, and lodge in your lungs. This clot can block blood flow in your lungs, which can strain your heart and lungs. This pulmonary embolism is a medical emergency. Dvt can also lead to chronic vein problems and swelling treatment with blood thinners is very effective in reducing risk. Compression stocking also recommended.

Absolutely: It is always dependent upon your history and also family history. Anytime that you have a history of deep vein thrombosis (dvt), you have an increased risk of future problems. You should have a comprehensive history taken and also family history. You may need a workup for familial reasons for the dvt. This is mostly a lab workup for thrombophilias.

Be Proactive: It this happened after a long journey like car or plane ride, or after a surgery where you were confined to bed, or if you were on birth control pills; then chances of this happening again are low. But if it was spontaneous than your doctor must have taken thorough history and necessary blood work like blood count and clotting factors studies etc. To assess the future risk and correct treatment.