How long will it take me to get abs?

I'm 5.7 and weigh about 124lb. I started running 3 miles as often as possible and doing 100 crunches and 100 sit ups for the last 3 weeks. I've already seen improvements. How long will it take untill I have abs? I can see my abs when I pull the tiny bit of down on my belly. I just have small moobies from lack of exercise that makes my belly look bigger, but it's steadily going. For the last few days i've upped it to jogging 4 miles.