Fussy baby

L

I’m a FTM and have a 6 week old baby boy. He is so sweet and we just adore him. Lately he has had been so fussy at night. He doesn’t sleep well and gets what seems like painful gas. I feel so bad because we’ve tried everything but he still seems so uncomfortable. He hasn’t pooped today. The pediatrician said it’s normal for them to not go for a couple of days at this age but it still worries me. Did you experience this or do you have any advice? I’m currently up at 3am and completely exhausted.