Hi, Machka. I just saw this thread and wanted to send you best wishes. DVT is very scary, I read something recently claiming that sitting at work for long periods can be dangerous as well. My family has a long history of vascular trouble, so it's something I worry about. I've never been able to sit still on flights of just 2-3 hours because my feet and legs start to swell and hurt. If I can't walk around due to turbulence, I do calf raises and lift myself off the seat several times using my legs. I also get hydrated and stay away from alcohol.

10 years ago my then girlfriend started using birth control that lasted six months. It was one of the implant devices. She developed clots and her friend had issues as well. Both were only 18 at the time. I think that the risk of blood clotting is higher with the long-term products being offered, though I haven't any studies to back it up.

Hope you've been able to otherwise enjoy your endless summer!