Mommy hello. Who's kid already teething and how does it go? The baby i…

Mommy hello. Who's kid already teething and how does it go? The baby is already the third week of crying fits. I don't know what to do. Doesn't sleep day or night. Constant tantrums. Crying fits every 40 minutes. Don't know what to do. Mouthwash for gums taken. We walk often. We bathe often. Eats formula, everything suits. Calming agents aren't helping anymore... Soon explosion...