Just because you feel "healthy" doesn't mean that all the bacteria has been killed. If you stop taking the antibiotics before the bacteria is thoroughly eradica

Just because you feel "healthy" doesn't mean that all the bacteria has been killed. If you stop taking the antibiotics before the bacteria is thoroughly eradicated, the bacteria may develop a resistance to the antibiotics you took. The antibiotics that you took are useless against this new bacteria. You will have to seek other antibiotics. Carry this on with multiple types of antibiotics, and you have a Big Problem. Edit: Amazing that there are four responses to this question, all within a minute of each other!