The thing about medication is that you do usually need to take all of it for the full effect. While it seems like symptoms clear up and that you are better, in reality, the bug (or pathogen causing the infection) is still there and can very likely come back bigger and badder than ever because you didn't fully kill it with your round of antibiotics. This is also how drug resistance happens. Bugs become smart and start to outsmart the antibiotics. So, I would not just decide to stop the drug on your own. Call your doctor or whomever prescribed the medication. Clinic or whatever. If you can't tolerate the medicine, then so be it but do your best to finish it. Good luck