How to run

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So I'm starting to jog now, but after a while I ALWAYS get a cramp on my side. I can usually walk it off for a little but, but it comes back once I start jogging again. I've tried not drinking water up to an hour before exercising, and breathing through my nose (which is hard to do when jogging for me! lol) but I still get this annoying cramp! Is there a correct posture to have, or maybe if I just push through it eventually my body will get used to it and I"ll no longer have cramps. I don't know, it's just annoying. I've always been cramp prone when working out btw..