If your doctor is prescribing you an antibiotic, you can ask them what the pros and cons are of taking it. If you are willing to deal with the cons, then maybe don't take the antibiotic. Usually, the con will be that you feel sick for a bit longer. Note though, that you might need them to get over whatever it is you have.
"People were generally aware of the link between overuse of antibiotics and increased resistance. Only 8% of respondents did not agree that if antibiotics are taken too often they are less likely to work in the future. But many people (43%) incorrectly believed that antibiotics were effective in viral conditions."
