Male hamster genital problems: UPDATE

[Wanderlust]

I've had Watson for just over a month now and on Thursday I noticed when I picked him up that his penis was showing. At this point I thought nothing of it and put him back thinking it would retract on its own, fast forward to today and it still has not retracted. At this point I'm panicking and Googled to see if there was any way to fix this problem and found that people had suggested using KY jelly to help so I followed the advice.

If it doesn't work is it worth taking him to the vet to see what they suggest I do about this?

Edit: I did try giving him water in case he is dehydrated but Watson despises me and won't let me hold him for very long and certainly will not let me put anything in his mouth.