I was actually thinking of you the other Day first_time_mummy, hadnt seen you around in a very very long time and was wondering if everything was ok?

like CL said, just coz the teeth arent there doesnt mean they arent causing problems i found with my DD (and im sure its the same for most babies) that the period BEFORE the tooth breaking the skin was actually the worst part, within a couple of days of it cutting the skin my DD slowly went back to the happy lil chappy she always was. My DD cut her first tooth at 3 months and her second just before 4 months (i couldnt believe it either lol)
Try cold teething rings? i even used to sit there with a wet washer and let her chew on my finger, she liked this more than a teething ring. i only used a small amount of teething gel alot of people are against it, but i only used it when she become unbearable, and also she was very younge and felt super bad for using teething gel at such a younge age,
the only other thing i can suggest, (and it might sound horrible to some) but maybe he's ready to start trying him on solids? start with rice cereal or something first of course, but maybe he's just looking for something more? and he's still hungry? i dont know, its just a suggestion?

i hope he settles down for you soon xx