As a financial advisor I have some worries here.  First off, it sounds like for you investing in something so volatile might not be the right thing.  Any proper financial portfolio should always first start out with a "foundation", meaning traditional assets and investments like stocks/bonds/money market accounts etc.  Then once you've got a solid foundation laid, and are on track to meet your retirement goals, THEN when you have some extra money, investing in more volatile 'investments" like bitcoin might be a good idea. 

Moral of the story, if losing $5 is a big blow for you personally, you shouldn't have bought any bitcoin.