Hi K.,
My daughter in law invited me to join this site so I'm just going to jump in here. I am the mother of three grown children, b/g twins with my second pregnancy. My guess is teething. Think of yourself having an on again off again tooth ache and that's what he's feeling. When he wakes in the night is he crying? As my babies got older and more alert they often woke up in the night. I'd hear them laying in there making sounds and I'd get up to check on them. If they were comfortable I'd watch them a while then go back to bed. I didn't get them up to change them and wake them up more if I didn't have to and they'd eventually go back to sleep.
I don't believe you can spoil an tiny baby. I know this is a hot topic with some, but is your son sleeping on his back or tummy? All of mine slept on their tummies, as did my two grand daughters. My daughter wouldn't pt her first on her tummy because the dr said not to. But when she was soo fussy and they were losing sleep one day when I was babysitting I decided I WOULD turn her over. She dozed right off and slept soundly. When my daughter and son in law came to get her they thought she was in another room because the room where the bassinet was was so quiet. When they saw her on her tummy they couldn't believe it. She slept on her tummy ever since.
I know teething time can be a hard time, for baby and parents.
Frozen teethers and numbing gels can be helpful. Don't let anyone tell you you will spoil your child with too much love or cuddling. Cuddle and rocking time is priceless, and good for you both. I do believe that sometimes, when the diaper is clean and feedings are done, that you need to let them cry until they settle themselves down. You can usually tell the difference between just crying/fussing and when there is a real need. I raised three happy healthy babies, including twins with a 2 1/2 year old, and I know I was a good momma. Now I'm a good grandma.
Best Wishes,
C.