!function(n){if(!window.cnx){window.cnx={},window.cnx.cmd=[];var t=n.createElement('iframe');t.display='none',t.onload=function(){var n=t.contentWindow.document,c=n.createElement('script');c.src='//cd.connatix.com/connatix.player.js',c.setAttribute('async','1'),c.setAttribute('type','text/javascript'),n.body.appendChild(c)},n.head.appendChild(t)}}(document);(new Image()).src = 'https://capi.connatix.com/tr/si?token=ff7fdddc-5441-4253-abc4-f12a33fad58b';cnx.cmd.push(function(){cnx({"playerId":"ff7fdddc-5441-4253-abc4-f12a33fad58b","mediaId":"fae423f1-956f-4fb9-9431-743da26d8b5a"}).render("68cc1824e4b0aa8d99fe93e4");});Your veins and arteries are working around the clock to carry blood where it needs to go. But when something goes wrong with those vessels, the body often sends early warning signs.The tricky part is knowing which symptoms are harmless and which could point to a dangerous condition like a blood clot, arterial blockage or even a stroke.To help make the distinction clearer, HuffPost asked vascular surgeons and vein specialists to share the symptoms they always take seriously and why you shouldn’t ignore them either.Swelling and pain in just one leg“There are a lot of causes for swollen legs, but as a vein specialist, I worry most about a deep vein thrombosis blood clot,” said