It IS always a pain to try and translate weeks into months! And people insist on being told how many months pg you are (especially my friends who haven't had children) which isn't the way we count at all!
I always count back from due date, as your due date is 'technically' the END of your 9th month. So, that way you are now nearly 7 1/2 months pg (or in your eight month of pregnancy).
Of course, just dividing by four weeks makes it all seem like it's going much more quickly