I went to the doctor yesterday for a check up and was told I had a heart murmur. Seeing as I was in a rush yesterday and not really knowing what a heart murmur was, I didn't get to tell my doctor issues that occur sometime throughout the week and after doing a little research on this I wonder if I should call for another check up in the near future. I have anxiety, which my doctor knows this, sometimes I get light headed (standing, sitting, walking, driving, etc.) periodically, my chest will feel uncomfortable and have pain (I do smoke a few times a day though) and often my vains will bulge out, more so and regularly in my legs, and also sometime it feels like my heart has like a frog/rattle sound. My doctor wants to take some blood work to check my cholesterol, etc... So what I'm asking is what really is a heart murmur and what should I do about these other conditions I have and if it's anything to worry about. Thanks.