I accidentally took a vicodin and hour after taking 2 25mg benadryl . will i be ok ?

It is not dangerous to your health, especially at your age, but you should not drive and operate machinery until next day.

When someone takes those two medications together, there is a good chance they will experience added drowsiness, as both medications may cause that. It’s a good idea to avoid driving or operating heavy machinery for the rest of the day.