I feel like a bad mom.

I don't know what my child wants.

He will be 4 months old this month and every day I find myself struggling trying to figure out what he wants. He still eats every two hours. He never sleeps more than 45 minutes without furiously crying. It takes so much for him to even go to sleep and he hasn't been able to fall asleep on his own without his glider or nursing since he was a newborn. For the past 3 days he has been crying almost non stop and I just don't know what to do. I've given him pain medicine just in case it is teething but it hasn't helped. I've tried feeding him and putting him to bed but nothing is working. He acts like he doesn't want me to hold him but when I lay him down it gets more intense. I honestly don't know how much more I can take before I just break down. I literally can never go anywhere because he cries the whole time since he doesn't fall asleep. I love my son more than anything but these past 4 months have been nothing but craziness and constant crying from both of us.