Whining all night?

Ash
Does anyone else's baby whine n cry literally all night? My son is so fussy at night he cries/whines every hour if not half hour. It's driving me crazy he wants to sleep in my arms. Anytime I put him back down he cries. I have no idea what to do my 4yr olds room is right next to ours and he wakes her up if I let him cry it out. we have the smallest apartment so you can hear him no matter what room we are in so I can't bring him to the living room to sleep. Advice on how to go about stopping this or what could be causing it would be helpful.