I took metronidazole I stopped taking them because of all the side affects is it ok to take tylenol (acetaminophen) to stop the pain?

Yes. That should be ok. Ask your physician for a different antibiotic that hopefully you can tolerate better.
Metronidazole. If you have developed side effects from the medication, you need to contact your physician, the one who prescirbed it, . You do not detail your condition, so any advice here is incomplete.