Hi. I'm a relatively thin 22 year old female (BMI 22) and I'm REASONABLY fit (i walk for about an hour a day and i'm on my feet all the time). I've always had pretty bad circulation in my feet. If I cross my legs for about 10 minutes, the skin goes gray and yellow and patchy. I also get pins and needles if I sit on the toilet for more than 10 or 15 minutes. Is this something to be concerned about? I'm not sure how long the discolouration has been going on for, I've only started to notice these things since I started having panic attacks and palpitations this year. I went to 2 doctors who listened with a stethoscope. No ECG though. I just wonder if I should be concerned enough to blow the money on a doctor if I've no symptoms that really bother me! My mom has a murmur and my dad died of a major heart attack aged 47 so...