Alright, so i recently stopped smoking and im now trying to get back in shape.i just started jogging for 15 min, will that help?

Absolutely!!!: Congrats on the cessation victory! and it is a victory, one you should be proud of. Usually, most people will notice an ease of breathing, improvement in taste and smelling within 2 - 4 weeks, but sometimes within days! your exercise tolerance should improve also, though this might take a little longer, since you are also needing to improve aerobic conditioning, an endeavor with variable results.