I believe (and I could be wrong) that you can increase the temp to about 80, it wont multiply it, it will help, increase the oxygen into the tank as well, then as soon as you can, get the meds.
Can you get anyone else to go to the lfs and add the med for you while you are at work.
I always have two meds in stock, whitespot, and bacterial med just incase.
Even if you have to throw them away if they go out of date better to have them on hand.