Id say grab an inhome testing kit from your local Walgreens or whatever you have there, and test yourself. With that amount of time, its possible that you will be able to pass, or be able to only do a slight dillution to be passable.

Jeffman is right though, guys alot of these questions you have, have been answered fully in the stickied threads at the top of this section. I know its a bit of reading, but alot of people put time into that, and its your best source for knowledge in regards to things like this.