Yeah, just wait it out... Genes play more of a role in your adult height, of course there are always variations to that (try looking at your parents' height and the guys in your family for an estimate)... The things you eat and the kind of exercises you undergo may also play a role however, not as much as you may think.. Maybe at the most, eating healthier and exercising might yield a little bit of growth, or most likely none at all... I'll just say it's best to get as much nutrients as possible, just in case...
But if I were you I wouldn't start worrying just yet... You're only 14... You're either average, or slightly behind others who have started puberty... People who start later usually finish in a quicker time span... But you're probably average...
I remember when I hit my growth spurt... I was like 5 foot 3 and 13... By the time I was 14, I was like 5 foot 9... By the time I was 15 I was 6 ft... At 16, my growth slowed down considerably however, over the 3-4 years of high school, I grew 4 more inches...
I'm 18 (almost 19) and I'm 6 foot 4 now... I'm glad to be done growing in height...
Not saying you'd be as tall as I, or as tall as the others here, but you have a good chance at being average and not remaining at your current height... You might have a huge growth spurt for a couple years, and then it will slow down as you near your adult height. Nearing your adult height, instead of a huge spurts, you'll only grow a little each year until your reach your adult height (as in many cases with guys). I've read somewhere that it's common for boys to grow a foot over the span of puberty...
Of course nothing is definite... But you'll most likely grow more...