Sarah,
I don't know about pulmonary embolism but my mother had a big heart attack in her 60's and her side of the family has a history of poor circulation. I started Tamoxifen in April 2010 and after 10 weeks on Tamoxifen with leg and feet cramps worsening by the day, I woke up one morning and couldn't see out of one half of one eye. Fortunately it cleared after about 5 minutes. The hospital classed the event as a 'mini stroke' and as I was postmenopause (65) my surgeon put me on an aromatase inhibitor instead of tamoxifen.
At that stage I was fairly fit and I cycled and I was only mildy overweight.
On Arimidex AI I suffered almost all of the side effects and after almost 2 years I gave them up as well, deciding to concentrate on keeping my heart attack risk down. So currently I'm not taking anything. I'm fitter now and I've changed my diet, I walk a bit and my BMI is normal, and most recent mammo 4 weeks ago showed NED
surfie