Not making enough milk?

I am EBF my baby, he is 2 weeks old and we were doing fine but since saturday he wants to eat all the time. He is not sleeping in the day like he used to, he just wants to eat, but after he starts eating he falls a sleep. I try to put him in his crib, but he wakes up and starts trying to eat again. He wont sleep anywhere but with me and attached to my tit! He was wetting 5 - 7 diapers a day but today he only got 3 or 4. I am worried he is not getting enough milk :( We havent had his first appoinment with the doctor so I dont know if he is gaining weight. Any advice? What should I do?