adive anyone? please?

Maybe he's colicky? Or maybe he has an upset stomach from his formula/food? You never know. Have you talked to the pediatrician about it? What have they suggested?

yeah i have and they say that nothing is wrong with him, i have even rushed him to urgent care to see what was wrong with him. and they did a blood test and listened to his stomach ect. but nothing is wrong with him. ...sigh sometimes i just have to walk away from him and let him cry so i dont do anything that i would regret you know...

Does it seem to happen at the same time each day? My kids used to cry in the evenings for no reason. It was like the day had caught up with them and they just needed to cry. You're not a bad mom. You check to make sure he is taken care of and there is no reason for his crying.

 He could be tired, lonely, frustrated, any number of things. If you know he's fed, dry, etc., then just talk to him in soothing tones, give him an extra cuddle, and let him cry a bit. You could also try putting him in a swing or a vibrating baby seat to see if that helps since it sometimes settles them down.

Sometimes babies just have to cry.  You are not a bad mom to let him cry sometimes.  Just don't leave him to cry too long, or he could get a tummy ache. If he cries a bit, and then he's better, you are doing a great job.

Babies can cry because they are wet, of course.  They'll cry if they are hungry, cold, hot, or if they are lonely.  They may cry because they are tired, and they don't know HOW to fall asleep. 

If you've changed him, fed him, played with him and rocked him, then it's perfectly fine to put him safely in his crib and let him cry a bit.

Lorelei

 your not a bad mom. babies cry for random reasons even after you have done what you have to do for them. my daughter did and she is 2 and still randomly cries.

If he isn't hungry, hot/cold, wearing a dirty diaper, etc., then he might just be feeling overwhelmed and tired. My baby cries a lot in the evenings if he is really tired and can't get to sleep. On days like that, rocking him to sleep and holding him while he sleeps is what works for me.

Sometimes a warm bath and fresh clothes can be soothing for baby. You could also try gently massaging his legs and feet with baby lotion/oil.

Just comfort him, without continually trying to stimulate him.

He may be overstimulated. Try to calm yourself so your anxiety doesn't affect his body --the way you hold him is different when you're feeling placid compared to when you're feeling frantic, and he can't cope with your frantic.

Leaving him alone doesn't 'help' as much as eliminate the bouncing and jiggling and chatting and eye contact... 

Have you tried wearing him in a moby wrap or a sling or something? It may help some.

Mine screamed from 10 to midnight every night. Nothing wrong. I put her in her cradle.