Is it possible to a dvt in both legs?

Absolutely: and not uncommon! Post trauma, surgery, cancer, or clotting disorders. Most have had some sedentary spell related to these.

Bilateral DVT: Yes, it is possible to have a DVT in both legs. The incidence of bilateral DVTs is about 7% of people with the appropriate symptoms.

DVT in both legs: Yes it is possible to get a DVT in both legs. Of course it is much less common than one leg.

Bilateral DVT.: It is possible to have a DVT in both legs simultaneously. This can happen in people for whom the risk exists in both legs concurrently, such as someone on a long plane trip or drive in a car, or someone who is immobilized after surgery or trauma. This could especially happen in someone with some inborn reason to clot, which may be sought in this context.