Yes, it should come back and usually by about 16 or so.
Use your fingers to spread the opening OR get an erection and pull down on the shaft skin so that the head spreads the opening. You WILL find your gland (head) to be VERY sensitive and this is NORMAL. It has been protected for your entire life by the foreskin. As it it exposed more it will become less sensitive.
You may find it more comfortable to do this in the shower as the water can help loosen the skin. The more often that you do this, the sooner you'll be able to pull it back. Never force it back.
Make sure to clean smegma out from under your foreskin too.
Don't panic about any of this. MANY young men do not know this should happen because nobody talks about it.