Can you washout vaginal cream if having allergic reaction?

My dr told me to get a vaginal cream for an infection but it’s causing severe irritation and a rash appeared a little after inserting it. Is it safe to try to wash it out with a pipet or would that just make things worse. I know douche is bad for you but I also don’t want my body to continue to be reacting. Will it coming out naturally on it own soon? I took Benadryl just in case it’s an allergy. Is there anything I can do?