help please ‼️

Idk if something is wrong my son just turned 6 months and he cries a lot all night he just stated doing that ?idk if something is wrong or what? Has any LO gone thru this ?? If so I can soothe him I would hug and carry him but he would still cry very loud!He normally wakes up 3-4 times to eat at night but will go back to sleep last night and the day before crying and crying..