How do you know?

Ash

I've been ebf my son pretty much since he's been born. I don't pump unless when I need to. So he always seems fussy and I'm constantly nursing like every 1 hr and half to 2 hrs.He snacks like twice in the middle of the night. Lately he's been extra fussy and so I feed him thinking he's hungry but Idk if he's going thru a growth spurt or I'm not making enough for him. TMI I'm currently on my cycle and was wondering could this be a reason why? I just pumped and got barely two ounces and he last ate 2 hrs ago. I also think this pump sucks because I can also express some milk at times after pumping. Also could it be possible I'm just not able to produce enough milk? ( I heard it happens to some people) Btw he's going on 4 months on the 1st of Dec.