Has anyone heard of the diet pill Phentermine causing blood clots?

I am a 30 year old woman who is now being hospitalized for not only DVT (blood clots) in my legs but also suffered from PE (pulmonary embolism). I even had to have surgery. I am not a smoker nor do I take any form of birth control and have been in good health despite being overweight until taking this medicine. The doctors still haven't found another option for the clots....anyone think the two could be related????