The window period for HIV varies depending on the type of HIV test you have. There are many different types of HIV tests and they all have different window periods.
In BC the standard HIV test is the 4th Generation AB/AG Elisa test, which is 95% accurate after 6 weeks and conclusive at 3 months.
Although all HIV tests have different window periods, I do not know of any HIV test which has a window period of more than 22 months. If you tested after 22 months, then that test is very likely conclusive.
If you are unsure which test you had, I would recommend contacting the clinic where you were tested and asking about the specific HIV test you had.
Please let us know if you have any additional questions.
Hope this helps,