Lately Dax has been scratching a lot. I've checked and checked for fleas and found nothing, and I'm pretty sure he's allergic to them because last time he had a flea, his whole belly turned red and scabbed (it was pretty gross), so I think I would be able to tell if there was a flea on him that maybe I just couldn't find. He chews on himself, it seems as if he's trying to chew his tail...or somewhere thereabouts. I've never gotten his glands expressed, so maybe that's bothering him? Sometimes he'll put his WHOLE foot into his ear and just move it around so slow it looks like he's trying to get his foot as far into his ear as possible to scratch. I've thought of ear mites, but I've looked in his ears and they're perfectly clean. If it was ear mites, wouldn't there be some gunk in his ears or something? After he does this he'll lick or chew on his paw and then put it right back into his ear. He licks his paws a LOT lately, and I usually make him stop when I see him doing it because I don't want them to get infected, but sometimes when I'm not paying attention, he'll jump up on the couch with me and his front paws will be soaked. I think he's doing this because they itch...? His eyes water sometimes...well it's mostly just one eye, the other one is normal. I've been thinking it's just allergies, irritation from shedding so much, etc. I just noticed him pawing at his mouth...?! Like his lip itches or something? Now that I'm putting this all in writing it seems like a lot. I'm wondering if I should take him in to the vet. He's still acting normal, he doesn't act like it's really bothering him, I just don't want him to be miserable. Any suggestions?
EDIT: The reason I'm thinking this is allergies is because it all just started around the time spring started...