Help!

suzienickles36

FTM here. My baby boy is only a week old, and has been pretty good with breastfeeding until tonight. He does go into these cluster feeding modes, which I know are normal, but today has been exhausting. Starting at about 4pm he wanted to feed and has continued to cry and act like he is starving ever since. My boobs feel like they are about to fall off. Anyway... my question is... is he getting enough milk? Is feeding him on and off for the past few hours diminishing my supply? He finally has fallen asleep, but I want to make sure there will be milk there when he wakes. Sorry to sound crazy I am stressed and want to make sure he is getting food.