whatever you do, DON'T PUSH IT. you'll end up forcing the bacteria further down into your poer, making it take longer to come to a head, making it more painful, making it bigger, and you'll end up with a nasty red mark for much longer than you would have if ud left it alone.
When I get one of these, I use calamine lotion on it - calamine is extremely drying - which is what you want. You want to dry up the oils in the zit, and calamine lotion will help draw them up and out of your skin. just make sure to rinse it and reapply every 2hours or so - and definitely leave a thick coating on there overnight.