it takes atleast 6 months before you see a bill from a collection company and the reason being is , you need to wait for the company you owe to write off the debt. 9 times out of 10 that debt is bought by a collection comapny for about 20 cents on the dollar. Considering your bill is so cheap , and if its for medical , you should get a notice within the next year that it was paid for by some amnesty/poor peoples fund. I forget what its called , I had it happen for me once because I wasnt paying the hospital bill , ( I have insurance and I pay 400 dollars a month for it , while my employer kicks in 800 which is a total of 1200 a month , so I say fuck them hospitals )
you have nothing to worry about with this bill. Toss it out .