6 week old teething?

WV

What’s the earliest a baby can begin teething? I swear my six week old is acting like she is beginning to teethe but I feel like it’s much too soon for it. Any ideas on what else it could be? She’s drooling constantly and always sucking on her hands or my shoulder or something. She is very fussy and seems to be in pain. I feel so bad for my baby and don’t know how to help 😓