Not enough milk!!

My daughter is 2 weeks old today & I'm exclusively breastfeeding her... my problem is I'm scared I'm not producing enough milk for her. Around evening every night she cluster feeds and she will start to get really fussy at my breasts and will suck really hard it makes it seem like she isn't getting enough. She doesn't wait long enough for more milk to come in I don't think... Idk what to do! Any suggestions???