Mircette and medication

I have been on Mircette for over a year and a half. I'm 54, in good health and work out. Never smoked but heart disease runs in my family. I've never had any problem with moods etc. My Dr. put me on the medication to regulate my periods, hot flashes and help me get through menopause. I like the fact my periods are lighter and predictable. Lately I've had pain in my legs, like maybe my deep veins and severe cramps in my thighs and feet. It was just at night now I'm having the pain during the day. I am so afraid of a stroke, heart attack, or blood clots. Does anybody know if this could be a blood clot? My Dr. says that I'm not going to have any problems because it is such a low dose. Any comments from anyone?