i went to ER today, was there for 4 hours, i had inner thigh/groin pain last night, and this moring it spread to inner knee/calf. i called doctor and they said to go to ER as it could be clots(DVT). well, after sonogram and 4 hr s at ER, nothing, they say probably strained muscle. after being home i noticed if leg is extended, not only dos it hurt the areas specified, but now a lump pops out in front of thigh and seems to be origin of pain(maybe lump is on a nerve casuing pain down leg) should i go back to ER, or just Rest/stretch/heat/ice?