Waking up can be a little disorienting. A baby might not know at first where he is or where you are. He also may have had a dream and waking into reality can be confusing for a moment. It's really different for every baby.
teething yet? if so rub gums with finger or oragel.the adult strength peppermint works best but only use a tiny dot!if he/she is old enough to hold things get teething toys and a washrag knotted to chew on.
Babies cry all the time it's there only form of communication. Reasons? Hot cold, hungry, wet, pain, upset stomach or gas, need to exercise their lungs, feeling alone need touch. Unfortunately you have to figure it out. It would be great if you could put them to bed at 8 and not hear from them til at least 9 am but that's not going to happen.