Ηello, I am a male 43 y old, I was a smoker from 25 to 35 and I started again to smoke heavily in the last 2 years. Strangely in the last 5 to 6 months I started to develop weird palpitating and murmuring sensations in my lower abdominal and pelvis and also some pains in my groin and higher thighs or sensations there. Sometimes rarely I even think that i feel a somehow intense pain in my femoral arteries. At the same time I had some problems with my erection. 

However all these started when I started to exercise in kick boxing and over stressing my legs. Also because I was scared I reduced heavily smoking (to zero cigarettes for up to a week or 2-3 cigarettes per day) More important when I am not smoking all these symptoms are vanishing after a few days, I mean vanish almost completely, and seems to return when I smoke again.

I made a triplex of my heart and a stress test before one year and a half and everything look normal. I check my symptoms in the internet and found that are related to an abdominal aorta aneurysm or a peripheral arterial disease in the legs and I was very worried. However I exclude the second since i can run and exercise quite intensely without any annoyance in my legs.