I swear to God that my four month old is teething! He's constantly drooling... Big time, he's biting on EVERYTHING he possibly can get into his mouth, and he's looking at food like "how do I get that from her into my mouth". He just turned four months old yesterday! I'm not ready for this stage again. I hope it goes quickly like it did with DS6. He broke teeth just a day after six months and by 12 months had all his teeth, including his molars. It was a long six months but at least it didn't go on for months at a time.