I've been doing quite a bit of research on hiv 2 lately. I think you will find the following to be true:
1. The only place on earth that hiv2 is 'prevelant' is West Africa.
2. Recently there has been an increase in hiv 2 occurrence in India.
3. Most labs in the US offer an HIV 1 and 2 Antibody combo test. I personally have taken several.
Good Luck
The window period is 3 months. Did your testing facility feel the need for you to test for HIV 2? Apparently not or they would have.